1. The floor is very dirty. Will you please ________?

　　　　 A. mop it up　 B. mop up it　　 C. to mop it up　　 D. to mop up it

15. It____(become) worse tomorrow. The temperature ________ (be) lower.

14. Then he______(try) to calm down and screamed for help.

12. She didn't even know where she ________(be). 13. The girl knew she______(may) be there for a long time.

11. We didn't know where________(go) at first.

10. Look!The children are running in all ______ (direct). What are they doing?

9. He ran away ________(wild) as fast as he could.

8. The children screamed because they were very ________(frighten).

7. I was in a ________(shop) center when the earthquake started.

6. It's______(real) cold here. You'd better put on your coat.