5. call on / upon　 号召

4. call in　 召请，请来

3. call for　 去接某人，接走某人

2. call for　 请求，要求

1. call at 　 访问，拜访某地

9. Your letter calls _____　 the days when we worked together fifteen years ago.

8. Call me _____ tomorrow; my number is 536291.

7. I heard somebody calling _____ to me from downstairs.

6. I shall call _____ him tomorrow.

5. Many of these songs called _____ the workers to take up the struggle.