一. 单项选择.( 共15分,每题1分)
( ) 1.—Mom, I play computer games?
—Yes, you can. But you have to finish your homework first.
A. must B. may C. will D. need
( ) 2. — What’s the matter with you?
—I had bad cold and had to stay in bed.
A. a; / B. a; the C. a; a D. the; the