Jack wasn't saying anything,but the teacher smiled at him ________ he had done something very clever.(2011·湖南)
— Why didn’t you come to Mike’s birthday party yesterday? — Well, I ____, but I forgot it.
There are a lot _______ people today than yesterday.
We have moved into a four-room flat so far. Our room is between _____.
I am in ______ charge of the class which was in ______ charge of my wife.
._______a group of students, the foreigner entered the museum.