A.watches, rings | B.is watching, rang | C.was watching, rang | D.watched, was ringing |
A.has left | B.has gone | C.has been away | D.has come back |
A.has been to | B.has gone to | C.went to | D.was in |
A.come | B.gone | C.left | D.worked |
A.don"t see | B.didn"t see | C.haven"t seen | D.won"t see |
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