3. C
4. B
5. D

四、
1. bad
2. healthy
3. when
4. because
5. weight
6. not
7. or
8. need
9. before
10. time

3. C
4. B
5. D

四、
1. bad
2. healthy
3. when
4. because
5. weight
6. not
7. or
8. need
9. before
10. time