Question

He___________the job well, but he________so careless.

A. had done;  had been

B. could do;  was

C. could have done;  was  

D. hadn’t done;  had been

Answer 1

C

解析:

答題的關(guān)鍵在于抓住句中的but，but后面的句子是對(duì)過(guò)去事實(shí)的陳述，應(yīng)用一般過(guò)去時(shí)；前面的句子則表示“本來(lái)能夠……”，是對(duì)過(guò)去事情的推斷，因此應(yīng)用could have done，句意為“他本來(lái)能夠做好那工作，但他太粗心了。”