6. keep out　不得入内

5. depend on　依靠，依赖 keep his words　遵守诺言

4. keep on　　继续不停地做某事

3. keep in touch ... with　与...保持联系

2. keep busy doing不断地，不停地，忙着做某事

1. keep back 　阻止...向前

13. Every few hundred meters along the wall there are watch-towers,　where soldiers　used to keep _____.

12. He walked so fast that I could hardly keep _____　 _____　 him.

11. The good news keeps our　 spirits _____.

10. I see you are getting along well with your English studies.　 Keep _____ the　good work.