1. 用方框内短语的适当形式填空

put off; hand in; make sure; turn over; get involved; pay attention to; come up with; to begin with; in turn; to put it another way

1. （1） Our staff will try their best to you enjoy your visit.
3. （2） The students answered the teacher's questions in class.
5. （3） They the idea of making full use of the materials at the meeting.
7. （4） As a student, you should your homework on time.
9. （5） Because of the weather, the sports meeting was .
11. （6） I believe you will a new leaf after graduation.
13. （7） Whatever you do, don't be a bystander. .
15. （8） , it's important to have a positive attitude to everything.
17. （9） While working in the factory, you must your own safety.
19. （10） We can't allow you to work here anymore. , you are dismissed.