第1题：
I would never have believed it was possible if I ______ it with my own eyes.
A. didn't see
B. don't see
C. won't see
D. hadn't seen
第2题：
In Leon Nacson’s view, air and water are our Number One priorities for the following reasons except ().
A、he cannot understand why people are polluting air and water
B、there will definitely be no fresh air and clean water for future generations
C、we would run out of air and water if we didn’t stop polluting them
D、air and water polluting are the current and futu
第3题：
(A) had been
(B) has been
(C) would have been
(D) would be
正确答案：A
解答参考：A.虚拟语气题。在动词wish后跟从句表达一个不能实现的愿望时，表示与现在事实相反从句用一般过去时，表示与过去事实相反从句用过去完成时。【译文】他没参加晚会，但他的确希望他能参加。
第4题：
“Have you seen Ann at the concert?”“No, but she said she would come,?”()
A. didn’t she
B. wouldn’t she
C. did she
D. would she
第5题：
A.used he
B.did he
C.didn't he
D.would he
第6题：
A、hadn't run
B、shouldn't run
C、haven't run
D、didn't run
第7题：
A、did they
B、were they
C、didn’t they
第8题：
It was getting dark. Some children and two Canadian women were still ___21___ on the ice near a big hotel. They were having a good time.
Suddenly the ice broke. One of the boys fell into the water. The children shouted, “Help! Help!” They didn't know what to so. The two Canadian friends heard ___22___ and skated over to get the boy out of the water.
The ice was thin. The two Canadians fell into the water, too. But they tried their best to ___23___ the little boy. They knew they must be quick. If they didn't push him up onto the ice, he would soon die.
Many people ran over to help.Some of them had ropes and poles. A young man jumped into the water to save the ___24___ people.
The boy and the two Canadian women were out of water at last. One of the women didn't feel well. She was sent to the ___25___ at once. But she felt very happy because the boy was safe.
21.
A.save
B.hospital
C.three
D.skating
E.them
22.
A.save
B.hospital
C.three
D.skating
E.them
23.
A.save
B.hospital
C.three
D.skating
E.them
24.
A.save
B.hospital
C.three
D.skating
E.them
25.
A.save
B.hospital
C.three
D.skating
E.them
第9题：
A、Ask
B、Asking
C、Asked
D、To ask
第10题：
A: would not have done
B: would not do
C: would do
D: didn't do