______ that no one was ever prepared for it.
Why do English people talk so often about the weather when they start a talk? — Because the weather is a(n) ________ topic (话题).
We should do ________ talking and some more work. Actions speak louder than words.
Our teachers always tell us ________ across the street when the traffic light is red. A. to go B. don’t go C to not go D. not to go
Who is the man over there? Is it Mr. Wu? — It ________ him, but I am not quite sure.
I didn’t see Tom last night. Where was he?--- He______ an interesting book at home.