将主动句改成被动句①I saw the boy enter the room.②Will they show a new
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1 The boy was seen by me to enter the room.

2 Will a new film be showed by them next week ?

3 Has the letter been posted by them yet ?

4 He is often seen by to help his classmate.

5 The light must be turned off by you before you go to bed .

6 Who is the book being repaired?

7 All the texts should be learned by heart by the student.

8 Your homework must be handed in by you before five .

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