We in our middle school for about 3 years.
A. study B. studied
C. have studied D. will study
Be quiet!The students____ a rest in the classroom now.
A. have B. Havehad
C. had D. are having
— Linda, ______ you make a model plane?
—Yes, Ican.
A．A.may B．can
C．need D．must
The air in these months is much than the air last winter.
A. good B. well
C. better D. the best
— ____ do you go to the library?
— Once a week.
A. How often B. How far
C. How much D. How long
Hurry up, _____we will miss the school bus.
A. but B. or
C. and D. so
