A.would pass | B.passed | C.should has passed | D.would have passed |
A.is able to | B.can"t | C.must | D.mustn’t |
A.went | B.had gone | C.should go | D.would have gone |
A.wouldn’t | B.can’t | C.mustn’t | D.needn’t |
A.could have stayed | B.could stay | C.would stay | D.must have stayed |
A.know; would tell | B.would know; would tell |
C.knew ; would tell | D.know ; tell |
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