问题

I couldn’t understand ______ at the poorchild.

A:you to laugh
B:you laugh
C:why laugh
D:you laughing

正确答案是：

同类题型

It isn’t going to rain, so you takean umbrella with you.A．mustn’t

Mum, I’m tired.—Why not ________

下列各句中,表达得体的一句是

The boy, _____ parents went to the US lastyear, felt lonely.

Thegroup in size over the past few years．