用所給詞的被動語態(tài)填空。
plant,      make,      hold,      look,      eat,      clean
1. The babies                after well by the nurses.
2. A meeting                next week.
3. All the fruit has been                by the boy.
4. This kind of watch is                in Shanghai.
5. The room has been                 by the students.
6. This tree                by an old man many years ago.
1. are looked  2. will be held  3. eaten  4. made  5. cleaned  6. was planted
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