-Is Dr. Wang ______ today?-No, He is busy prearing for an operation.
Beijing is cold this time _________. You need _______ warm clothes if you go there.
Can you provide us _________ some information _______ the computer?
Have you decided _________ Shanghai?
-How about going hiking this weekend? -Sorry, I prefer _____rather than _____.
The teacher told the students _____in class.