问题

The professor walked onto the platform and seated himself in a chair, ____ for answering questions

A:had prepared
B:being prepared
C:preparing
D:prepared

正确答案是：

同类题型

_______ makes the people in Shanghai proud is _______ they have achieved a lot in the past ten years.

I like swimming better than climbing, because I think climbing is ________ swimming.

The police　　a prisoner.

Have you thought of the topic for the composition? — Not yet．I _____ it very carefully, but I haven’t decided

We believe the time and hard work _______ in completing such an important project are worthwhile.