—Amy, please tell the people ______ for their turns to come to my office five minutes later. — Yes, sir.
The girl was listened _______in the next room when I came back last night.
They've made the mistake again, though they _______.
---Bob has gone to California.---Oh, can you tell me when he _________?(2011北京卷32)
When Alice came to, she did not know how long she _____ there. (2011新课标卷29)
He made a wonderful discovery, of great importance to science.A which I think is B. which I think it isC. which I think it D. I think which is