A.is travelling | B.are travelling | C.travelled | D.would travel |
A.had said | B.said | C.had been saying | D.were saying |
A.writes to | B.has written to | C.wrote to | D.is writing to |
A.are working | B.have been working | C.worked | D.had worked |
A.Have; read | B.Did; read | C.Have; have read | D.Did; have read |
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