A.does | B.did | C.has to | D.had to |
A.went | B.had gone | C.had been | D.have been |
A.are; stayed | B.are; staying | C.have; stayed | D.did; stay |
A.have just finished | B.had just finished |
C.am just finishing | D.am just going to finish |
A.was completed | B.is completed | C.completed | D.has completed |
A.change | B.has changed | C.changing | D.had changed |
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