21.choose the proper words and put it in the right forms to complete the sentences and then write them down.In some cases elther of the words on the words is possible.
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1) I will tell you who worked at a factory.
2) He said that he worked at a factory.
3) We didn't know either where he worked.
4) He asked us when we worked at a factory.
5) Do you know why he worked at a factory?
6) He didn't know why he worked at a factory.
7) You didn't tell us whose factory you worked at.
8) They asked me how many factories I had worked at.
9) We didn't know who else worked at a factory.
10) We were sure that he worked at a factory.
11) A man asked me how I worked at a factory.
12) I forgot which excuses he gave for not working at a factory.

1. I never take part in any competition.
2. Sometimes I take part in the competition.
3. If you don't believe in your luck, you can miss a very good chance.
4. I'm afraid he has already lost his chance.
5. Every leaf has a lucky month in the next year.
6. What gave a new beginning to the history of long distance travelling.
7. Does she mind his travelling by air?
8. Is she going to give up playing tennis?
9. I hope to win the Round-the-World race.
10. I think computers are harmful because children become nervous, angry and tired