English Grammar and Usage

Subordinate clauses start with conjunctions or prepositions and cannot exist without the on the main clause. Here “wherever you like” is dependent on “You may stand”. Hence, Option D is correct. The rest of the options do not fit this description, hence incorrect.

A simple sentence is made up of only one clause, containing one subject and one verb. From the given options, A contains one clause, with one subject "John", one verb "had taken" and one object "the day off". Hence it is a simple sentence and option A is correct. Option B starts with a subordinating conjunction which makes the clause dependent. Dependent clauses are incomplete in meaning whereas a simple sentence is an independent clause, complete in meaning. Hence option B is incorrect. The sentence in C is a complex sentence made up of an independent clause "John got an urgent call from work" and a dependent clause "even though he had taken the day off" hence C is incorrect. Option D is grammatically incorrect, the subject John cannot be followed by a pronoun, as pronouns replace the nouns (here, the subject).

A simple sentence is consists of a single subject and a verb. From the given options, B contains a simple sentence made up of one subject "My car" and one verb "broke down". Hence B is correct.
Option A is incomplete in meaning, it lacks a verb that would qualify it as a sentence.
Option C is grammatically incorrect. When a sentence begins with 'so', it is usually followed by a comma ','. ('So' when used in the beginning of a sentence functions as a discourse marker, i.e., it connects the sentence with a previous idea.)
Option D is a compound sentence, made up of two independent clauses: 'My car broke down' and 'I had to look around for a taxi'. ('so' is a conjunction that connects the clauses)
It has two subjects and two verbs. Hence options A, C and D are incorrect.

A compound sentence is made up of two independent clauses, which are complete sentences on their own. Adversative compound sentences contain two ideas that contrast each other in meaning. The conjunctions used in such sentences include but, yet, still and so on. Option C contains two contrasting ideas, "chaos around her" and "kept her cool", hence option C is correct. Option A contains two alternate ideas, represented by "or else", hence it's not adversative in nature, option A incorrect. Option B contains two cumulative clauses, connected with the conjunction "and", hence B is incorrect. Option D is inference based, as one idea is inferred or deduced from another, hence D is also incorrect.

A compound sentence is made up of two independent clauses, which are complete sentences on their own. Alternative compound sentences express a choice between two alternatives. The pair of sentences in option B have the alternatives "go to Rome..." and "stay here..." They can be joined using "either...or", hence B is the correct option. Option A contains two unrelated sentences, they are not alternatives hence A is incorrect. Similarly, C does not contain alternatives, hence it's incorrect. Option D is in relation to time, they are not alternatives, hence D is incorrect.

A compound sentence is made up of two independent clauses, which are complete sentences on their own. Adversative compound sentences contain two ideas that contrast each other in meaning. The conjunctions used in such sentences include but, yet, still and so on. From the options, A is the most suitable as it contains contrasting ideas, the general idea being that at this age one does not play basketball. Option B contains inference based sentences, where the former is inferred from the latter, hence B is incorrect. Option C presents a choice between two ideas "swim" and "walk", hence C is incorrect. Option D contains two ideas that can be connected with a cumulative conjunction 'and', since they have a similar goal, 'go to the dairy and buy milk'. Hence D is incorrect.

A compound sentence is made up of independent clauses, i.e., both clauses can stand as complete sentences. They use a coordinating conjunction to combine the clauses. Option A contains a compound sentence which contains two independent clauses (I like playing football and my brother likes playing golf). The conjunction that combines them, "whereas" is a coordinating conjunction. Hence option A is correct. Option B contains a complex sentence; the clause that begins with "as if" is the dependent clause. Hence option B is incorrect. Similarly, option C is also a complex sentence; the clause beginning with "because" is a dependent clause. Hence C is incorrect. Option D contains a simple sentence, with one clause, hence D is also incorrect.

A compound sentence is made up of two independent clauses, which are complete sentences on their own. Alternative compound sentences express a choice between two alternatives. Option D expresses two alternatives, "make changes" and "complain", hence option D is correct. Option A expresses a cause and effect relationship between the sentences, hence it's not the appropriate option. Option B expresses two contrasting ideas, "met with...accident" and "went to work", hence it isn't the appropriate option. Option C is inference based, where one is deduced from the other, hence it's not an appropriate option.

A compound sentence is made up of two independent clauses, which are complete sentences on their own. Illative compound sentences contain clauses where one is inferred or deduced from another; for example, "There's someone in the hall for the light is on", where "for" is an Illative conjunction. From the given options, Option B contains a sentence of the Illative nature as the clause "I was punished" is the conclusion or inference of the clause "I had misbehaved in school". Hence B is correct. Option A does not contain Illative main clauses: one does not conclude the other, Hence A is incorrect. The sentence in C is a simple sentence, there is only one clause; hence C is incorrect. Option D is a complex sentence whereas sentences with Illative clauses are compound. The sentence in D expresses comparison and not inference; hence D is also incorrect.

A complex sentence is made up of two or more clauses, where at least one of them should be independent, i.e., complete in meaning. The other clause/clauses should be dependent; it should depend on the main/independent clause for its complete meaning. The given sentence is made up of a dependent clause "After reaching the station" that depends on the main clause "we waited for half an hour for the train to arrive" for its full meaning. Hence it is a complex sentence and option B is correct. A simple sentence requires only one clause. A compound sentence requires both clauses to be independent, hence options A and C are incorrect. Option D is incorrect because the correct answer lies in option B.

A compound sentence is made up of two independent clauses, which are complete sentences on their own. Illative compound sentences contain clauses where one is inferred or deduced from another; for example, "There's someone in the hall for the light is on", where "for" is an Illative conjunction.
In this question, we need to choose the option that can use "for" as a conjunction. The sentence in option B. "Someone's at the door" is deduced from "I heard somebody knock". Hence B is the correct option. A contains sentences that contrast each other, it would require an adversative conjunction such as "I love chocolate but I don't eat cake" (since most cakes have chocolate). Hence option A is incorrect. Option C contains alternative sentences ("Neither do I smoke nor do I drink alcohol") in the negative. Hence C is also incorrect. Option D contains cumulative clauses ("Not only was I praised for my bravery but also given a medal for it"). Hence it's the incorrect option.

A complex sentence is made up of two or more clauses, where at least one of them should be independent, i.e., complete in meaning. The other clause/clauses should be dependent; it should depend on the main/independent clause for its complete meaning. From the options, C contains a complex sentence since the clause "Even though I read the chapter thoroughly" depends on the main clause "I couldn't understand it well" for its complete meaning; hence C is correct. A contains a compound sentence, since both clauses are independent on their own and is joined by the conjunction "either...or". Option B contains a simple sentence, it has only one clause. Option D contains a compound sentence, where both clauses are independent (the conjunction "neither...nor" is used in compound sentences). Hence options A, B and D are incorrect.

A compound sentence is made up of two independent clauses, which are complete sentences on their own. Illative compound sentences contain clauses where one is inferred or deduced from another; for example, "There's someone in the hall for the light is on", where "for" is an Illative conjunction. From the given options, B contains suitable clauses that can be combined with 'therefore'. "He isn't in a very good mood." is concluded from "He was asked to resign today." hence option B is correct. In A, the clauses do not express any relation, they can only be added to one another, hence A is incorrect. In option C, the sentences contrast each other in meaning ("She has been sick, yet she is lively and happy"); hence C is incorrect. Option D shows a choice between two alternatives ("You can either come here and work or you can work from home"); hence D is also incorrect.

The given sentence has only only one finite verb and thus, only one clause. Thus, it cannot be a complex or compound sentence. Therefore, Option B is the correct answer. 

There is only one finite verb in the given sentence and, by extension, only one clause. Hence, the sentence cannot be a complex or a compound one. Thus, Option D is the correct answer.