Fill in the blank with the correct form of the verb given in the bracket. First he _____ (have) tofill in a form for a new cheque book, as all the cheques in the old book are used up.

The correct answer is: has

The sentence is in the present tense, so the verb “have” should be conjugated in the present tense as well. The other options are not grammatically correct in this context.

• Has is the simple present tense form of the verb “have”. It is used to talk about things that are true in the present moment. In this case, the speaker is saying that the man must fill in a form for a new cheque book. This is something that he needs to do right now, so the simple present tense is the correct tense to use.
• Will have is the future tense form of the verb “have”. It is used to talk about things that will happen in the future. In this case, the speaker is not saying that the man will fill in a form for a new cheque book at some point in the future. He is saying that he must do it right now. Therefore, the future tense is not the correct tense to use.
• Had is the past tense form of the verb “have”. It is used to talk about things that happened in the past. In this case, the speaker is not saying that the man filled in a form for a new cheque book in the past. He is saying that he must do it right now. Therefore, the past tense is not the correct tense to use.
• Should have is the past modal form of the verb “have”. It is used to talk about things that should have happened but did not happen. In this case, the speaker is not saying that the man should fill in a form for a new cheque book. He is saying that he must do it right now. Therefore, the past modal form is not the correct tense to use.