--I’mexhausted.I

问题详情：

 -- I’m exhausted. I _____ on a project day and night.

-- You’d better have several days off after finishing it. Otherwise you might break down.

A. have been working       B. have worked            C. work            D. worked

【回答】

A

知识点：现在完成进行时及其被动式

题型：选择题