4. set out to do　　 开始，着手

3. set out　　 出发，动身

2. set off　 起程，出发

10. 给某人树立榜样1. set about doing　　 着手，开始

9. 释放某人

8. 放火

7. Let's set _____ the tent first, and build the fire later.

6. A few scarecrows(稻草人)were set _____ in the field.

5. We'll certainly set_____ a complete modern industrial system.

4. He set _____ to write a history of civilization(文明).