21.— Go for a picnic this weekend, ok ?

  --Sounds wonderful. __________

   A.I couldn't wait       B. I'm afraid not C. I don't think so.     D. I believe not

22.--I hear there was a road accident this morning.

--Yes._____ car hit a tree and _____ driver was killed.

A.  A, a      B. The,  a      C. The, the      D.  A, the

23.As I arrived in Sydney, I wanted to see everything on my first day,______  I knew was impossible.