A.can | B.must | C.should | D.need |
A.would have known | B.would know | C.will know | D.will have known |
A.was | B.were | C.am | D.be |
A.am | B.was | C.be | D.will be |
A.would | B.must | C.can | D.need |
A.mustn’t | B.oughtn’t | C.don’t | D.didn’t |
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