20.-Will you sing a song for us all, Miss Lucy?
-Sorry. I ___________. My throat is hurting badly.
A.mustn’t B.can’t C.needn’t D.oughtn’t
19.-I’m too busy to go to the cinema with you, John.
-__________ The film is said to be a very good one.
A.That’s all right. B.I apologized.
C.What a pity! D.It don’t matter.
18.Now American researchers think they are close to developing a pill, _________ will help people forget bad memories.
A.which B.what C.that D.it
17.The whole building ______ in the big fire.
A.burn down B.was burnt down
C.broke down D.was broken down
16.-What time shall we meet at the school gate?
-__________ it 8 o’clock.
A.Let’s make B.Let’s fix C.I suggested D.I say
15.The time he has devoted in the past ten years _______ the disabled is now considered ______ of great value.
A.to help; being B.to helping; to be
C.to help; to be D.helping; being
14.It was autumn ___________ his wife returned from America.
A.when B.since C.before D.that
13.It’s hard for me to imagine what I would be doing today if I ________ in love, at the age of seven, with the Melinda Library in my hometown.
A.wouldn’t have fallen B.had not fallen
C.should fall D.were to fall
12.All the players came to the sports filed at 7:00 and _____________.
A.then the game begin B.then did the game begin
C.then began the game D.began then the game
11.Who would you rather ______________ the article instead of you?
A.have write B.have to write C.write D.have written