A.must | B.might be | C.can | D.may |
A.can"t | B.don’t | C.needn’t | D.won"t |
A.is possible to | B.may possible | C.is likely to | D.is maybe to |
A.mustnotbe | B.needn’tbe | C.cannotbe | D.wouldnotbe |
A.Can | B.Must | C.May | D.Shall |
A.shall | B.will | C.can | D.would |
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