II. Passive voice with present perfect

Active : S + have / has + P2 + O

Passive : S + have / has + been + P2 + by ….

Exercise 1: Chia ®éng tõ trong ngoÆc ë th× hiÖn t¹i hoµn thµnh.

1 . She ………………………..……………..…..(wait) for two hours to see you.

2. She ………………………..…………………..(be) to America.

3. John ………………………..……………..…..(see) that film several times.

4. They ………………………..……………..……(live) in this street for a long time.

5. She …………………………..………….……..(not speak) to me since last week.

6. We …………………………..…………..(study) every lesson in the book, so far.

7. I ………………………………..………………….(have) three colds this winter.

8. Up to now, John …………………..…………………………….(work) very hard.