问题

The professor________at the meeting will give us a lecture next week.

A:referred
B:referred to
C:referring
D:referring to

正确答案是：

同类题型

Taking a trip abroad is certainly good for oldcouples, but it remains ____ whether they will enjoy it.

27. Do you know what use people _______ pines after they’re cut down?

What’s your idea? — My opinion is _________ happens, we should not stop the reform[ ]

We have to ____ ourselves when weare away from home.

______we can’t get seems better than _______we have