A.did; set | B.had done; should be set |
C.should do; be set | D.had done; must be set |
A.can; it | B./; / | C.would; it | D.may; / |
A.for; to | B.that; be | C.which; should be | D.to; being |
A.would be sent | B.should send | C.be sent | D.must be sent |
A.will protect | B.should protect | C.shall protect | D.are protecting |
A.are | B.were | C.would be | D.would have been |
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