The project ______ last month but unfortunately it had to be prolonged because of the financial problem.

A. needn’t have been finished B. shouldn’t have finished

C. could have been finished      D. must have finished

 

C

【解析】

試題分析：句意：這個項目本來是可以在上個月完成，但是不幸的是，因為財政問題，它不得不被延期。從but unfortunately it had to be prolonged because of the financial problem.可知這是對過去的虛擬，用could have done表示“本可以做卻沒有做”，所以選C.

考點：考查情態(tài)動詞和虛擬語氣

 

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