I . Choose the correct answer. 1. Don’t come before seven. I my homework. a. haven’t finished b. won’t have finished c. hadn’t finished 2. She loves animals. She a dog for as long as she can remember. a. has had b. had had c. will have had 3. Jack wanted to know why Sally to him yet. a. hasn’t written b. hasn’t been writing c. hadn’t written 4. We him, so we were very surprised to see him. a. haven’t been expecting b. haven’t expected c. hadn’t been expecting 5. His playing has improved because he all month. a. will have practised b. has been practising c. had practised

1. The correct answer is a. haven't finished.
To form the correct answer, we need to use the present perfect tense. In this sentence, the action of not finishing the homework happened before the present moment. Therefore, we use "haven't finished" because "have" is the auxiliary verb for the present perfect tense, and "finished" is the past participle of the main verb "finish."

2. The correct answer is a. has had.
To form the correct answer, we need to use the present perfect tense. In this sentence, the action of having a dog started in the past and continues up until the present moment. Therefore, we use "has had" because "has" is the auxiliary verb for the present perfect tense, and "had" is the past participle of the main verb "have."

3. The correct answer is a. hasn't written.
To form the correct answer, we need to use the present perfect tense. In this sentence, the action of not writing to Jack happened before the present moment. Therefore, we use "hasn't written" because "has" is the auxiliary verb for the present perfect tense, and "written" is the past participle of the main verb "write."

4. The correct answer is b. haven't expected.
To form the correct answer, we need to use the present perfect tense. In this sentence, the action of not expecting him happened before the present moment. Therefore, we use "haven't expected" because "have" is the auxiliary verb for the present perfect tense, and "expected" is the past participle of the main verb "expect."

5. The correct answer is b. has been practicing.
To form the correct answer, we need to use the present perfect continuous tense. In this sentence, the action of practicing started in the past and continues up until the present moment. Therefore, we use "has been practicing" because "has been" is the auxiliary verb for the present perfect continuous tense, and "practicing" is the present participle of the main verb "practice."