---Are you still very busy?
---Yes, I _____ the report for the manager and it won’t take long．

---Has your father returned from Africa yet?
---Yes, but he ____ here for only three days before his company sent him to Australia．

----Have you finished your homework?
-----No, I ________ my younger sister all day yesterday.

To      this happening again, John suggested that the source of all the water supplies      .
A, stop, be examined                      B, keep, should be examined  
C, prevent, examined                  D, stop, was examined

Most of the movies directed by Zhang Yimou ________historical facts.

He said that his friend ________there three days before, but she was not there_______.

The number of students of this school ____greatly in the last few years.

---Do you know our home town at all?
--- No, this is the first time I _____ here.

Miss Gao asked her mother if she _______ to the hospital the day before when she was out.

I am sorry that I can not meet you at the airport. I          Changsha by the time you come back from abroad.