1. Tom rode his bike ______________ and had an accident. (CARE)
2. Thomas Edison is one of the greatest _____________ in history (INVENT)
3. I hope we will have __________ cars in the future. (DRIVE)
4. SSS is a sky ______________system; it will stop everyone from crashing. (SAFE)
5. We couldn’t see the airplane because it ____________ behind the cloud. (APPEAR)
6. We should reduce the use of ____________ at home. (ELECTRIC)
7. Solar energy can be used to _________ or cool our houses. (HOT)
8. Air ____________ is a serious problem. (POLLUTE)
9. He was very _____________ when he heard the news. (EXCITE)
10. I don’t like him because he is ___________. (FRIEND)
II.
1.I/ not/ get/ any letters/ him/ recently.
2.When/ we/ small/ we/ used/ play marbles/.
3.Her father/ going/ buy/ her/ new bike/.
3. In/ future/ we/ able/ live/ the moon/.
4. People/ build/ new hospital/ near/ house/ next year.
5. It/ five kilometers/ her house/ city center.
6. It/ not difficult/ carve wood/.
7. How long/ it/ take/ you/ go/ school?
8. She/ not/ play tennis/ more/.
9. The film/ make/ famous director/.
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