G. Choose the correct answer to complete the sentences.
1. The teacher didn’t write a book, _____?
a. did he b. did they c. doesn’t he

2. Bruno and Maritza have taken classes together, _____?
a. hadn’t they b. haven’t they c. don’t they

3. It will rain today in the afternoon, _____?
a. won’t they b. will it c. won’t it

4. I didn’t drink much water yesterday, _____?
a. did I b. were I c. didn’t I

5. Karina is very responsible, _____?
a. isn’t she b. is she