EX12. Khoanh tròn đáp án đúng.

1. His mother hasn’t prepared the meal (already/ yet).

2. Tommy (worked/ has worked) for this company for 10 months but now he doesn’t work here.

3. This machine (has worked/ worked) for ten years so far.

4. Mr Vu (have found/ founded) this non-profit organization to benefit the local community.

5. Jame’s (not been/not) a member of the volunteer club since he left school.

6. Her husband (has given up/ gave up) smoking when they had their first child.

7. (Have you read/ Did you read) this book yet?

8. I lost my key on my way home last night. Up to now I (didn’t find/ haven’t found) it