Ⅰ. 单项选择。(15分)
( )1. Lucy and Lily _____ China next week.
A. is visit B. are visi ting C. visit D. visits
( )2. —How do you go to work?
—I usually go to work _____.
A. by a car B. in a car C. on a car D. by cars
( )3. —Must I finish my homework now?
—No, you _____.
A. may not B. mustn’t C. can’t D. needn’t
