English Grammar

The subject 'School children' is plural, so the correct negative auxiliary verb is 'don't' (do not).

This is a tricky one. Spoken English would not normaly use 'whom' except when it is followed by a preposition: to whom. Yet, for the purpose of grammar, perhaps the usage shoud be 'whom' to indicate object case. 

The sentence describes a general fact or a habitual state regarding the weather in California. The simple present tense 'doesn't often rain' is the correct form for expressing such regular occurrences. Options using 'isn't raining' or 'hasn't rained' imply specific ongoing or past actions rather than a general rule.

This question asks about a daily habit, which requires the simple present tense. 'Do you brush' is the correct construction for a question in the simple present with the subject 'you'. Options using 'have you brushed' or 'are you brushing' change the aspect to perfect or continuous, which is less appropriate for a general daily routine.

The subject 'your parents' is plural, so the correct auxiliary verb for the simple present question is 'Do'.

The noun 'foot' has an irregular plural form, which is 'feet'. Options A and C are incorrect because 'feets' and 'foots' are not real words. Option D is incorrect because the singular subject 'I' must be paired with 'have' rather than 'has'.

The sentence describes a past event, so the simple past 'didn't prepare' is the correct form.

The answer is in the simple past negative, so the question must be in the simple past interrogative: 'Did you call...?'

The answer uses past continuous ('was sleeping'), so the question must use past continuous: 'What were you doing...?'

The question is in the present continuous tense, so the answer must also be in the present continuous: 'My friends are going to Delhi.'

The answer uses the present perfect tense ('I've taken'), so the question must use the present perfect: 'How many times have you taken...?'

The subject 'hobbies' is plural, so it requires the plural verb 'are'.

The question is in the present continuous tense, so the answer must be in the present continuous: 'He is reading a magazine.'

The sentence requires the verb 'is' to agree with the singular subject 'Aishwarya Bachhan'.

The present perfect continuous tense is used to describe an action that started in the past and continues to the present. 'For' is used to indicate a duration of time, making 'for three hours' the correct phrase.

The superlative form of 'naughty' is 'naughtiest'. Option C correctly uses the definite article 'the' and the superlative adjective without redundant modifiers.

The phrase "go for a walk" is a standard English idiom used to describe the activity of walking for exercise or pleasure. Other prepositions like "on", "at", or "in" do not form the correct idiomatic expression in this context. While the article "a" is missing in the option, it remains the most appropriate choice among the provided prepositions.

When referring to family members, 'eldest' is the correct superlative form to denote the one born first. 'Older' is a comparative, and 'most eldest' is grammatically redundant.

Proper nouns representing countries generally do not take an article. Therefore, 'He lives in India' is the only grammatically correct sentence.

The possessive pronoun 'their' is required to indicate that the relatives belong to them. 'There' refers to a place, and the other options are misspellings.

Names of certain counties like the USA, the UK, the UAE are preceded by article 'the', because of the use of the adjective 'United'.

The verb 'belong' is a stative verb and does not take the continuous form. The simple present 'I belong' is the correct way to express origin or possession.

'Children' is already the plural form of 'child', so it requires the plural verb 'love'. Adding an 's' to 'children' is incorrect.

 It will be inappropriate to use the definite article 'the' before breakfast because the reference is general, not breakfast on a particular day.