Chia dạng đúng của động từ trong ngoặc ở thì hiện tại hoàn thành hoặc hiện tại hoàn thành tiếp diễn.
1. I (try) to learn English for years, but I (not succeed) yet.
2. Mary is ill because she (work) in the garden all day.
3. She (work) so hard this week that she (not have) time to go to the movies.
4. That book (lie) on the table for weeks. You (read) it yet?
5. He (not be) here since Christmas. I wonder where he (live) since then.
6. Jack (go) to Paris for a holiday. He never (be) there.
7. You (sleep) so far? I (ring) the bell for the last twenty minutes.
8. He (write) a novel for two years, but he (not finish) it yet.
9. Mary (lose) her hat and she (look) for it until now.
10. She (sleep) for 10 hours! You must wake her.
1. have tried - haven't succeeded
2. has been working
3. has worked - hasn't had
4. has lied - Have you read
5. hasn't been -has lived
6. has gone - has never been
7. Have you slept - have rung
8. has written - hasn't finished
9. has lost - has been looking
10. has slept
