Section A 4a答案
1.Your bedroom must be cleaned every day.
2.Teenagers should be encouraged（by their parents）to do social work for their community.
3.Can the homework be done （by Lucy）tomorrow instead?
4.Do you think teenagers must be kept away from the Internet？
5.Teenagers should be fiven chances to make their own decisions.
Section A 4b答案
be asked，are allowed，be educated，start，move，take，continue
Section B 1c答案
Ciecled:1,4
Section B 1d答案
| 1 | 2 | 3 | 4 | 5 |
| c | e | a | b | d |
Section B 2c答案
1.His hobby is running.
2.He wants to be a professional rnuner.
3.They believe that he should stud in the evenings.
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