Применить "after," "when," "by," "by the time," "before," "until":1. My parents

Применить "after," "when," "by," "by the time," "before," "until":
1. My parents had eaten the dinner ... I got home. 2. He had been a worker ... he
became a businessman. 3. It will have grown completely dark ... 8 o'clock. 4.
Bill had already left ... we got there. 5. ... the guests had left I went to bed. 6.
... she gets the letter, he will have been far away. 7. Where did your sister work
... she had graduated from the Institute? 8. Her eyes were red ... she had cried. 9.
I had never seen any of Turner's paintings ... I visited the art museum. 10. ... the
end of next year her son will have finished school. 11. The train hadn't left yet ...
they came to the station. 12. Ann hadn't come to Paris ... the end of May. 13. I
went to the chemist's ... I had visited my sick friend. 14. Nick had studied
French ... he entered the University. 15. She hadn't been able to swim... he
taught her. 16.I had seen a new Italian film ... the news. 17. She went to
London... she had learned English. 18. They had been studying at the University
for two years ... the war broke out. 19. They won't have left the town ... you send
them a fax. 20.I hope ... the end of the winter I'll have learned to ski.