A.could | B.shall | C.may | D.can |
A.should, can | B.may, will | C.mustn’t , may | D.can’t ,must |
A.must be playing | B.could be playing |
C.must have played | D.must have been playing |
A.mustn’t leave | B.shouldn’t have left |
C.could not have left | D.needn’t leave |
A.Can | B.May | C.Will | D.Must |
A.mustn’t have passed | B.couldn’t pass | C.wouldn’t have passed | D.hadn’t passed |
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