问题

______ their homework, these three studentshave to stay in the classroom for another thirty minutes.

A:is
B:Not finished
C:Having not finished
D:Not having finished

正确答案是：

同类题型

I’ m sorry. I ______ at you the other day.—Forget it. I was a bit out of control myself.

The murderer was brought in , with his hands ___ behind him [ ]

－How about playing tennis after class －______!

He has been told many times that his casualclothes are not ____ for some formal occasions

What class are you in I’m in_________.