--- How did you like the concert last night?
--- I enjoyed it very much, but the dancers a better job.
A. could have done
B. couldn’t have done
C. could do
D. had done
网友回答
(答案→)A. could have done
B. couldn’t have done
C. could do
D. had done
解析：考查情态动词。could have done 本可能做某事而实际上没有做，句意：你认为昨天晚上的音乐会怎么样？我非常的喜欢，但是舞蹈演员做得更好一些。故选A。