--- Has James finished his report on his Enquiry Learning yet?\ ---- I’m not sure. He _____ on it last week.
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 is C. which I think it D. I think which is
Come and see me whenever . A. you are convenient B. you will be convenient B. you will be convenient C. It is convenient to you D. it will be convenient to you