A.can | B.need | C.might | D.should |
A.could | B.would | C.should | D.must |
A.hadn’t watched, wouldn’t have been | B.didn’t watch , wouldn’t be |
C.didn’t watch, wouldn’t have been | D.hadn’t watched, wouldn’t be |
A.Would | B.Shall | C.Should | D.Can |
A.may | B.will | C.must | D.need |
A.could have attended | B.must have attended |
C.could attend | D.shouldn"t have attended |
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