A.can watch | B.will watch | C.would have watched | D.could watch |
A.shouldn"t | B.may not | C.can"t | D.needn"t |
A.could | B.should | C.must | D.Shall |
A.must be | B.could be |
C.must have been | D.could have been |
A.not to go | B.don"t go | C.not go | D.won"t go |
A.speak | B.spoke | C.will speak | D.to speak |
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