问题补充：
.
－Jim! Did you have a good time at the party?
－Yes，but with all this work on hand，I reallythere．
A. needn’t have been
B. couldn’t have gone
C. shouldn’t have been
D. shouldn’t have gone
答案：
A. needn’t have been
B. couldn’t have gone
(答案→)C. shouldn’t have been
D. shouldn’t have gone
解析：
