1.
When we (came) to the station, our train had already (left). 2.
Victor asked me to explain the new rule to him, as he ( had missed) the
previous lesson. 3. John Gray (visited) Russia in 1989 and (has not been)
here since that time. 4. I decided not to put on my raincoat as it ( had
stopped) raining already and the sun (was shining) brightly. 5. When the
teacher told the boy to recite the poem, the boy (burst) into tears:
he (did not remember) anything, though he ( had tried) to learn his lesson so
hard. 6. Jane usually works in the library. She (is working) there now.
She has already ( gathered) the necessary material and now she (is writing)
her report.