Question

【题目】-- Tom says he is too tired to go on.

-- He can’t. He ________ for an hour.

A. had worked B. has just worked

C. just worked D. has only been working

Answer 1

【答案】D

【解析】

试题分析：考查动词时态。句意：汤姆说他太累了不能继续了。他不可能这样，他只工作了一个小时。从本题的语境中可以看出他不可能累的原因是：他从开始工作到现在仅仅才工作了一个小时，因此应该用现在完成进行时，故选D项。