We ______laugh at our classmates.A.must B.may not C.mustn't
We ______laugh at our classmates.A.must B.may not C.mustn't
They___ the film at that time a.may see b.mustn't see c.must
May I come in? No, you ___. A. mustn't B. needn't C. may not
Our teacher must be in his office,A mustn't he B can't he C
We are not allowed to touch it.We__touch it A.mustn't B.must
we ___ be friendly to our classmates.A.may B.should C.needn'
We _____ fight against pollution.A.may B.Should C.mustn’t D.
We ____fight against pollution.A may B should C mustn't D ne
May I come in?No,you ___.A.mustn't B.needn't C.may not D.are
We mustn't buy things we____ A.needn't B.need not C.don't ne
We ______ talk loudly in the library.A.must B.mustn't C.can
1.—May I talk in class?—No,you___.A.mustn't B.may not C.shou