Dưới đây là các câu đã được chuyển sang dạng bị động:

1. The teacher won't accept papers written in pencils.
--> Papers written in pencils won't be accepted by the teacher.

2. The athletes may visit some interesting places after the Sea-game.
--> Some interesting places may be visited by the athletes after the Sea-game.

3. Mike's parents have to clean up their house before the New Year.
--> Their house has to be cleaned up by Mike's parents before the New Year.