1. Yesterday afternoon, they(go)...............home after they (finish)..............their work.
2. He(do).....................nothing before he(see)....................me two years ago.
3. He (thank).....................me for what I (do)...........for him
5. Last night, after they (go).....................,,I (do)....................for him.
6. Last night, after they (go)..................,I (sit)..........................down and (rest).................
7. My friend (not see).....................me for many years when I (meet).............last week.
8. He (learn)....................English before he (leave).......................for England five years ago.
9.In England,he soon (remember)......................all he (learn)...............
10. They (tell)........................him they(not meet)........................him before.
11. He (ask)........................why he (come)......................so early.
12.She (say)..............................that she(already,see)......................Dr.Rice.
13. By the time Bill (Get).....................there yesterday morning,the meeting (start)..................
14. When we (arrive).........................at our place last night, we (find)............................that a burglar (break)...................in.
15. Almost everybody (leave)...................for home by the time we (arrive).....................yesterday afternoon.
16. By the time Jacson arrived  to help, we (already finish)......................moving everything.
17. The apartment was hot when I got home, so I (turn).....................on the air conditioner.
18. Alexander  Graham bell (already invent)............................the telephone by the time I was born.
19 The farmer's barn caught on fire some time during the night. By the time  the firefighter arrived, the bulding(burn) to the ground . It was a total loss.
20. The suit I bought cost more than a week's salary. Until then, I(never spend)...................so much on one outfit.
21.Yesterday a hornet(sting).......................me under my arm. That really hurt! When I put on my shirt after working in the gardern, I didn't notice that there was a nornet in it.
22. We were not happy with the plan that archited showed us for our new house. Obviously,he (never design)...................a home like the one wanted.
23. When I saw that mike was having trouble, I (help).........................him. He was very appreciative.
24. My wife and I went to Disneyland when we visited Los Angeles last spring.Prior to that time,we (never design)...................a home like the one we wanted.
23.When I saw that Mike was having trouble, I (help)..............him.He was very appreciative.
24. My wife and I went to Disneyland when we visited Los Angeles last spring. Prior to that time, we(never fly)..............to such  a big amusement park. It was a lot of fun.
25. Last year I experienced how tedious long plane trips can be. I (be).......................is an airplane for fairly long distances before, but never as long as when I went to Australia in June.
26. Mr.Khan has had experience teaching chemistry and physics, but he (never teach)...................Mathematics until this year. He's found that he enjoys teaching.
27. Promptly at five, I wentto Iris' office to offer her a ride home from work,but I couldn't find her. She( already leave)..............