had been on
was on
has been on
would be on
第1题：
A. operated
B. operated on
C. cut on
D. opened
第2题：
A.had been collected
B.has collected
C.has been collected
第3题：
The teachers??____________ the office for a few minutes when we arrived. We didn’t meet them.
A. had been away from B. had left
C. have been away from D. have left
第4题：
A died
B would die
C had died
D has died
第5题：
Progress so far very good and we are sure that the work will be finished on time.
A. was B. had been C. has been D. will be
第6题：
A. going on
B. working on
C. studying for
D. sitting on
第7题：
A. has been on
B. has on
C. was on
D. had been on
第8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9题：
He told me that he ____ in Naples the previous year.
A、has been working
B、has worked
C、had been working
D、had been worked
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