问题

You look tired.—YesI _____ non-stop until twelve o’clock

A:hasn’t been working
B:wasn’t working
C:was working
D:didn’t work

正确答案是：

同类题型

I have no brother, but Jim has.

(2014·福建名校质量检查)The United Nations is trying to free the world________the threat of war

依次填入下列句子括号里的成语，恰当的一项是①甲

ould report any incident, _______ minor it is.

joy, only a small numberof people voted against it, and the majority were it