He often gets up very late. He _________ takes exercise in the morning.
--- What’s this, Xiao Hong? — It’s _____ orange.
Must we sweep the floor right now? No, you _______. You can do it later.
Excuse me, may I ask you some questions, Jane? OK, _______.
To fight SARS, we should ______ animals.
Did you give up ?Yes. I know smoking may cancer.