A.are; stayed | B.are; staying | C.have; stayed | D.did; stay |
A.was translated | B.has translated |
C.has been translated | D.translated |
A.saw | B.had seen | C.see | D.was seeing |
A.be infected;be sent | B.was infected;be sent |
C.should be infected;was sent | D.be infected;was sent |
A.was preparing | B.is preparing |
C.has been preparing | D.had been preparing |
A.am enjoying | B.will enjoy | C.shall enjoy | D.will be enjoying |
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