问题

Though the professor tried his best to explain the difficult question, the students still looked _____.

A:confusing
B:being confused
C:to confuse
D:confused

正确答案是：

同类题型

So you haven’t read the information form?—_________makes the matter worse is that I don’t have a single copy．

Those boys _________ English at the English corner now.

Open the window please, Mike. —____________I didn’t hear what you said.

If you have any problems, you can ask Dr. Know-all _________ help.

下列各句中，表达得体的一句是