A.could catch | B.had caught |
C.would catch | D.could have caught |
A.be, to do | B.has been, doing |
C.be, doing | D.has been, to do |
A.might | B.must | C.should | D.shall |
A.would get | B.got | C.must get | D.might get |
A.If it is not; can"t live | B.Were it not; couldn"t live |
C.Had it not been; couldn"t have lived | D.If they were not ; couldn"t live |
A.lying; must have happened | B.lie; must happen |
C.lay; might have happened | D.had lain; could have happen |
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