---May I go to the cinema this evening?
---____. We should do the voluntary work in the nursing house.
| A.Take it easy | B.Forget it | C.Don’t mention it | D.Couldn’t agree more | 
  It is very kind of you to do the washing-up, but you  it.
| A.mustn’t have done | B.wouldn’t have done | 
| C.mightn’t have done | D.didn’t have to do | 
  ---Let’s see if the basketball game has started yet.
  ---Started? It must be clear who  by now.
| A.is winning | B.wins | C.has won | D.would win | 
  ---Are you still going to Shanghai for the Spring Festival?
  ---Yes, but I really  because I have a lot of things to deal with.
| A.can’t | B.mustn’t | C.won’t | D.shouldn’t | 
  ---Look! The clouds are gathering.
  ---Yes. I’m afraid it  be pouring down soon.
| A.can | B.must | C.should | D.might | 
  The poor boy  the test again; in that case, his mother will be very disappointed.
| A.must have failed | B.might fail | C.could have failed | D.should fail |