A.should | B.ought to have | C.shouldn’t have | D.will have to |
A.must have gone to | B.can’t have gone to | C.mustn’t have been to | D.can’t have been to |
A.would; knew | B.will; knows | C.would; knows | D.will; knew |
A.is | B.is to be | C.be | D.to be |
A.it must rain | B.it must be raining | C.it must have rained | D.it must have been rain |
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