A.will go | B.goes | C.go | D.would go |
A.should have known | B.should know | C.must know | D.must have known |
A.would be,had listened | B.would have been,had listened |
C.would be,listened | D.would have been,listened |
A.had seen | B.could see | C.must see | D.should see |
A.might | B.could | C.should | D.would |
A.will come back | B.came back | C.have come back | D.had come back |
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