A.had lived; helping | B.should live; help |
C.were to live; helping | D.should have lived; help |
A.mustn’t | B.needn’t | C.couldn’t | D.may not |
A. will | B.may | C.shall | D.must |
A.to take | B.taking | C.take | D.would take |
A.will | B.must | C.should | D.would |
A.Must, can | B.Can, can |
C.Must must have | D.Can, must have |
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