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2. A: What (you, do) were you doing
when the accident occurred?
B: I (try) was trying
to change a light bulb that had burnt out.
3. I (have) have had the same car for more than ten years. I'm thinking about buying a new one.
4. If it (snow) snows / is snowing this weekend, we (go) are going to go / will go skiing near Lake Tahoe.
5. A: What do you call people who work
in libraries?
B: They (call) are called (Passive)
librarians.
6. I came to England six months ago. I started my economics course three months ago. When I return to Australia, I (study) will have been studying / am going to have been studying for nine months and I (be) will have been / am going to have been (Non-Progressive) in England for exactly one year.
7. Sam (arrive) arrived in San Diego a week ago.
8. Samantha (live) lived in Berlin for more than two years. In fact, she (live) was living there when the Berlin wall came down.
9. If Vera (keep) keeps drinking, she (lose, eventually) will eventually lose / is eventually going to lose her job.
10. The Maya established a very advanced civilization in the jungles of the Yucatan; however, their culture (disappear, virtually) had virtually disappeared by the time Europeans first (arrive) arrived in the New World.
11. Shhhhh! Be quiet! John (sleep) is sleeping.
12. It (rain) has been raining all week. I hope it stops by Saturday because I want to go to the beach.
13. Listen Donna, I don't care if you (miss) missed the bus this morning. You (be) have been late to work too many times. You are fired!
14. I am sick of rain and bad weather! Hopefully, when we (wake) wake up tomorrow morning, the sun (shine) will be shining / is going to be shining.
15. I have not traveled much yet; however, I (visit) will have visited / am going to have visited the Grand Canyon and San Francisco by the time I leave the United States.
16. I (see) had seen many pictures of the pyramids before I went to Egypt. Pictures of the monuments are very misleading. The pyramids are actually quite small.
17. In the last hundred years, traveling (become) has become much easier and very comfortable. In the 19th century, it (take) took two or three months to cross North America by covered wagon. The trip (be) was very rough and often dangerous. Things (change) have changed a great deal in the last hundred and fifty years. Now you can fly from New York to Los Angeles in a matter of hours.
18. Joseph's English (improve, really) is really improving, isn't it? He (watch) has been watching American television programs and (study) studying (same subject so you do not need to repeat "has been") his grammar every day since he first arrived in San Diego. Soon he will be totally fluent.
19. When I (arrive) arrived home last night, I discovered that Jane (prepare) had prepared a beautiful candle-lit dinner.
20. If you (need) need
to contact me sometime next week, I (stay) will be staying / am going to be staying at the Sheraton in San Francisco.