单项选择题

A. With pleasure. B. Yes, please.
C. Of course not. D. Thank you.
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单项选择题
A. On foot. B. By bus. C. By car. D. By bike.
A. On foot.
B. By bus.
C. By car.
D. By bike.
填空题
Taking away a city’s rubbish is a big job. Every day trucks come into a city to (11) it. Most rubbish is made up of things we can’t eat or use. If we (12) these things, we would soon have a mountain of rubbish. In some cities the rubbish is collected and taken (13) the city to a dump. Often the city dump is placed where the ground is low or there is a big hole. The kitchen rubbish is broken into (14) and sent into the sewage system. The sewage system takes away the used water from toilets, bathtubs and (15) .
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