If the operation __ carefully prepared, it would not have been successful.
A. was not
B. has not been
C. had not been
D. were not
第1题：
A. have understood
B. understood
C. will understand
D. would have understood
第2题：
A. relieved
B. was relieved
C. relieves
D. was relieving
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：
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5题：
the last sentence of the passage implies that if another drought came, ______.
A. the situation would be much worse
B. people would have to desert their homes
C. the city would be fully prepared in advance
D. the city would have to redevelop the neighborhood
第6题：
A. will not be angry
B. would not be angry
C. had not been angry
D. would not have been angry
第7题：
The rice ______ if you had been more careful.
A. would not be burning
B. would not burn
C. would not have been burnt
D. would not burnt
第8题：
A.Had there been
B.If there was
C.Were there to be
D.If there would have been
第9题：
一If he________，he __________that food.
一Luckily he was sent to the hospital immediately.
A. was warned;would not take
B. had been warned;would not have taken
C. would be warned; had not taken
D. would have been warned; had not taken
第10题：
A、was warned, would not eat
B、had been warned, would not have eaten
C、would be warned, had not eaten
D、would have been warned, had not eaten