Spotting Errors

'Quite' means 'to a certain degree or extent' and it suits the context of the sentence.

‘Its’ is incorrect and ‘it’s’ (it is) is the correct option.

The phrase 'cent per cent' is redundant when used with 'merit list' or in general usage where '100 percent' is preferred. However, the error is in the tense usage: 'had topped' and 'had secured' are both past perfect, but the sequence of events is simultaneous or simple past. 'He topped the merit list and secured 100 percent marks' is more natural.

The past perfect tense 'had said' should be used instead of the simple past 'said' because the action of speaking occurred before the action of telling his boss. Therefore, the error lies in part D.

The word 'fast' is both an adjective and an adverb. 'Fastly' is not a standard English word. The correct adverbial form is 'fast'.

The relative pronoun 'which' is used for inanimate objects or animals. Since the subject includes a person (the farmer), the correct relative pronoun is 'who'.

In conditional sentences starting with 'if', the present tense is used in the 'if' clause to refer to the future. 'If I shall go' is incorrect; it should be 'If I go'.

When a specific past time (last week) is mentioned, the simple past tense must be used. 'Has come back' is present perfect and cannot be used with a definite past time marker.

The sentence describes a sequence of events in the past. 'The visitors left' should be 'the visitors had left' to indicate that their departure happened before he returned.

The sentence uses 'had known' (past perfect) in the first clause, implying a past context. The main clause should also be in the past tense, so 'he has gone' should be 'he went'.

The main verb 'was told' is in the past tense, so the subordinate clause must also be in the past tense. 'She has gone' should be 'she had gone'.

The first part of the sentence is in the past tense ('threw out'). Therefore, the purpose clause should also use a past tense form, changing 'has' to 'had'.

The idiom is 'a habit of doing something'. Therefore, 'to keep' is incorrect and should be replaced with 'of keeping'.

The word 'Hot' is an adjective and cannot function as the subject of the sentence. It should be the noun 'Heat'.