— What were you doing when we were playing basketball yesterday afternoon?
— I ______ the classroom.
A. clean B. was cleaning C. will clean D. have cleaned
—What do you often do at weekends?
—I often ________ my grandparents.
A. visit B. visited C. have visited D. will visit
—Must I hand in my homework now， Mr.Smith?
—No，you ________.
A. can’t B. shouldn’t
C. wouldn’t D. needn’t
—Which season do you like _________，winter or summer?
—Summer.
A. well B. better
C. best D. the best
—________people are there in your family?
—Three.
A. How often B. How long
C. How many D. How much
I’d like to go with you, _____________I’m too busy.
A. or B. and C. so D. but
