第1题：
A. took part in
B. take part in
C. would take party in
D. have taken part in
第2题：
Bob would have helped us yesterday ,but he .
A.was busy busy
B.is busy
C.had been busy
D.will be busy
第3题：
She is very dear to us. We have been prepared to do it takes to save her life.
A. whichever B. however C. whatever D. whoever
第4题：
A.will setup
B.have set up
C.would have set up
D.had set up
第5题：
John told us that by the end of the year they _____ together for thirty years.
A. would have been living
B. would have lived
C. would have been lived
D. will have been living
第6题：
A.I'm afraid not, because I have to go to an important meeting.
B.Of course not. I have no ide
C.No, I can't.
D.That's all set.
第7题：
________ somebody had told us the truth, we would have known how to solve this problem. A. Only if B. If only C. Even if D. As if
B If only引导虚拟语气
第8题：
A. have understood
B. understood
C. will understand
D. would have understood
第9题：
They _____ with us for the time being.
A. would stay
B. will stay
C. have been staying
D. will be staying
第10题：
If we had a sample in hand, we () to negotiate business with our end-users now.
A、would be able
B、should have
C、had been able
D、should have been able