Chuyển sang câu bị động.
1. This is the first time I have written to my girlfriend about this.
2. He has finished that experiment.
3. No one has opened that box for the past hundred years.
4. Students had studied American cultures before they went to American.
5. Nobody has ever seen the other side of the room.
6. They have driven air pirates away.
7. Marys mother has bought me a dictionary.
8. Someone had invited you to lunch.
9. We havent moved anything since they sent you away to cur...
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Chuyển sang câu bị động.
1. This is the first time I have written to my girlfriend about this.
2. He has finished that experiment.
3. No one has opened that box for the past hundred years.
4. Students had studied American cultures before they went to American.
5. Nobody has ever seen the other side of the room.
6. They have driven air pirates away.
7. Mary's mother has bought me a dictionary.
8. Someone had invited you to lunch.
9. We haven't moved anything since they sent you away to cure you.
10. They have invited the doctor to dinner-party.
11. The teacher has told all the details of the case.
12. They haven't seen their younger son for three weeks.
13. Have you fed the chickens yet?
14. One has used that door for 20 years.