Peter doesn't wear glasses,so this pair of glasses be his.( )
can't
couldn't
mustn't
They were _________ when they heard the _______ news.
—How about going hiking this weekend? —Sorry, I prefer _____rather than _____.
The teacher told the students _____in class.
What would you like to _____us about your hometown.
---Must I return the magazine to you right now, Sandy? ---No, you _____.You may keep it until next Wednesday.