A.came | B.to come | C.would come | D.was coming |
A.to take | B.to have taken | C.take | D.have taken |
A.can have happened | B.must have happened |
C.should have happened | D.must happen |
A.must | B.should | C.may | D.Can |
A.could | B.may | C.can | D.have to |
A.must do | B.could do | C.would have done | D.should have done |
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