9.-Could I use your bathroom?

-Yes,you could.

8.Tom kept quiet about the accident as not to lose his job.

7.You’re late again.Don’t late next time.

6.Someone is knocking at the door.Go and see who he is.

5.Do you know his difficulty he had for keeping five children at school?

4.I’ll never understand how the plane crash came out.

3.He is a nice man except his hot temper.

2.For a long time the language in America kept the same,while the language in England changed.

1.By three o’clock tomorrow afternoon,I’ll have it finished typing these letters.

12. 他是怎么知道我们在什么地方的呢?

_____________________________________________

IⅤ.单句改错