—________ I smoke here?
—No. You are not allowed to smoke in public places.
A. Could B. Must C. May D. Might
It is very important for us ________ English well.
A. learn B. learning C. to learn D. learned
Hurry up, _________ you will be late for class.
A. and B. or C. but D. so
John is standing ________ Gina and Jim.
A. at B. during C. between D. in
He didn’t go to school yesterday _______ he was ill.
A. because B. because of C. if D. so
Computers ________widely in our daily life.
A . use B. used C. were used D. are used