A. needn"t | B.may not | C. can"t | D.must not |
A.going to | B.can | C.is going | D.can to |
A.Do | B.May | C.Shall | D.should |
A.could have had | B.must be having |
C.should have had | D.can be having |
A.shall | B.need | C.should | D.can |
A.must | B.need | C.may | D.ought |
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