问题

The two friends _____ on the Internet for three hours, and they would go on till the next morning.

A:had been chatting
B:had chatted
C:were chatting
D:has been chatting

正确答案是：

同类题型

He does nothing except _____ TV at home on Sunday.

By the time she ________ home, her parents will have prepared some delicious food for her

One of the suspects is _________ schoolboy.

The movie had an interesting ending; the grandfather ___

The window was broken. Try to ________who has brokenit.