---Would you be so kind as to close the window?

---_________.

A.　　 With pleasure B. It depends.　 C. Why not　　　 D. My pleasure.

As students, we have many duties to perform, with improving our ability to learn____.

  A. in special     B. in advance     C. in practice           D. in particular

If it were not for the fact that you ____ Greman, I would introduce you to my Chinese friends.

A. speak        B. spoke          C. would speak          D.have spoken

---I’m not _____ up so early yet but I have to _____ myself to it.

---Yeah. Just as the saying goes,” An early bird catches the worm.”

A .used to getting; adopt 　　　　　　　　　　　　 B. accustomed to getting; accustom

C. used to get; adapt　　 　　　　　　　　　　　　 D. accustomed to get; accustom

I’d appreciate ____ if you could help me wash the dishes.

A. that              B. what          C. it                   D. this

I would have come earlier, but I ____ you were waiting for me.

A. didn’t know B. hadn’t known　

C. wouldn’t have known 　　　　　　　　　　　　　　 D. haven’t known

 Though ____to see us, the professor gave us a warm welcome.

A. surprising    B. was surprise    C. surprised        D. being surprised

On AIDS Day, the minister of Health Department demanded the problems ______ paid special attention to.

A. referred to being　　 　　　　　　　　　 B. referred to be 　　　　

C. refer to being D. refer to be

 Cloning humans has been _____ in the science world for many years and it is  likely that it will continue to be.

  A. ridiculous              B. contemporary    C. controversial       D. contradictory

It is required that the students____ mobile phones in their school, so seldom____ them using one.

 A. don’t use; will you see                  B. not use; will you see

C. mustn’t use; will you see                       D not use; you will see