A.should have failed | B.could have failed |
C.need have failed | D.might have failed |
A.shall | B.will | C.must | D.could |
A.must have worked | B.should have worked | C.may have worked | D.should work |
A.am going to call | B.will call | C.call | D.am to call |
A.can’t | B.mustn’t | C.shouldn’t | D.may not |
A.mustn’t | B.can’t | C.shouldn’t | D.may not |
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