I. Supply the verbs with present perfect:
1. The bill isn’t right. They (make)………….. a mistake.
2. ……..they (pay)…….. money for your mother yet?
3. Someone (take)………………. my bicycle.
4. Wait for few minutes, please! I (finish)……………. my dinner.
5. You (not/do) ………….your project yet, I suppose.
II. Supply the verbs with simple past or present perfect:
1. We (study)...............a very hard lesson the day before yesterday.
2. We (study)................................................almost every lesson in this book so far.
3. We ( watch)..........................that television program.
4. We (watch).....................an interesting program on television last night.
5. My wife and I........................................(travel) by air many times in the past
6. My wife and I (travel).................................. to Mexico by air last summer
7. I ( read)..................that novel by Hemingway sevaral times before.
8. I (read).........................that novel again during my last vacation.
9. I (have).........................a little trouble with my car last week.
10. However, I (have)......................... no trouble with my car since then.
III. Rewrite the sentences with the same meaning as the first ones:
1. She started to live in Hanoi 2 years ago. (for)
=> ………………………………..…………………
2. He began to study English when he was young. (since) => …………………………………………………
3. I have never eaten this kind of food before. (This is)
=> .............…………………………………………
4. I have never seen such a beautiful girl before. (She is)
=> ……………............……………………………
5. This is the best novel I have ever read. (before)
=> …………………….............……………………