21.It is _______ great shock for all of us to hear _______ news that three university students lost their lives because of saving others.

  A. the;a   B. /;a   C. /;/  D.a;the

22.According to the school rules, no student_______ go out of the school after eleven o’clock at night without the teacher’s permission.

  A. will     B.shall    C. must   D. may

23.It was very _______ of you to let us know you were going to be late for the party.

  A. particular   B. merciful   C. considerate   D. considerable

24.I’d like to do something for you_______ everything you have done for me.

  A. in exchange   B. in turn  C. in return for  D. in terms of

25. Jasper is a great painter. He is _____ Picasso.

A. as a great as          B. as great painter as  

C. as great a painter as  D. so great a painter as