1. Many people don't know about the............... of soil pollution. (dangerous) 2. The river is seriously.................. by the factory's waste. (contaminate) 3. High blood................ can be brought about by noise pollution. (press) 4. The water color can show us how.............the river. (pollute) 5. A lot of............fish are floating on the surface of the lake. (die)

31. My mother took me to the zoo yesterday

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32. Blair invented a color television in 1928.

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33. John gave me these records last week.

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34. Our club holds meetings once a month.

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35. She doesn’t find anything in that box.

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Choose the best answer.

We are looking for ____ place to spend ____ night.

Choose the best answer.

Please turn off ___ lights when you leave ___ room.

Choose the best answer.

I like _____ colorful costumes of ____ ethnic minority people in Vietnam.