Fill in the Blanks

Case of present perfect tense in passive voice. In such cases, we use 'has/have + been + the third form of the verb'.

Infinitive 'to' always takes the first form of the verb. Thus, option 2.

Case of subject verb agreement. Singular subject takes singular auxiliary. Thus, opiton 1.

Case of past indefinite tense. The key word here is 'lost'. In past indefinite tense we use the second form of the verb.

Case of future indefinite tense, as is shown by words 'next month'. Thus, option 2.

'The child' (being singular) qualifies the verb of being 'has'.

Case of past continuous tense. In such cases, we use 'was/were + verb+ing'.

Case of present continuous tense. Plural subject takes plural auxiliary. Thus, option 1.

Modal 'need' best qualifies the blank.

A sense of advice or requirement is implicit in the sentence which best qualifies option 2.

Case of coordinative conjunction. Lest' always takes 'should'. And modal always take the plural form of the verb.

Case of past indefinite tense, where we use only the second form of the verb. Option 1.

In conditional sentences if the 'if clause' takes present tense then main clause uses simple future. If the 'if clause' is in past tense, then main clause uses 'would + first form of verb'. The condition is fulfilled only in option 4. Other options are ungrammatical.

Case of imperative sentence in present tense. In such cases, we use the first form of the verb.

Where a general fact is mentioned present indefinte tense is used.