问题

You look tired.—- Yeah, I ________ since 4 o’clock.

A:the teacheris not satisfied
B:have been playing
C:am playing
D:have been played

正确答案是：

同类题型

______, there must be life on other planets though none has been discovered.—I agree with you. The universe is so large after all.

Luckily, the people there did ______ help him.

Internet shopping will ready when people make sure that it is safe.

How do you like your new job，Sam?—It’s so _________ . I don’t like it atall.

The house is leaking When will you get it ________?[ ]