14．It is impolite to keep others waiting．Is itimpolite to keep others waiting?——青夏教育精英家教网——

14．It is impolite to keep others waiting．（改为一般疑问句）
Is itimpolite to keep others waiting？

into air winter heavy change

Many cities today have problems．Some have too many people and cars．Some are filled with polluted （86）air．Some are too noisy．Smart people who plan new cities are thinking
about ways to （87）changethem．They want to make them better．One idea is building a dome（圆顶） over a city．Only offices，houses，and schools would be under the dome．People can't come （88）intothe city in cars．In this way，there would not be too much noise or any
traffic problems．If a city is under a dome，it can be kept warm in （89）winterand cool in summer．People can walk around without （90）heavyjackets，and they don't have to be worried about rain or snow，either．

12．-How long has he ？
-For three years．（　　）

	A．	bought the mobile phone		B．	lived in this city
	C．	joined the basketball team		D．	become a pianist

11．-How is the weather in your hometown？
-It's wonderful!It's hot cold all year round．（　　）

	A．	either，or		B．	neither，nor
	C．	both，and		D．	not only，but also

10．We must hurry up．The plane will in an hour．（　　）

9．-I missed the school bus yesterday．
- bad luck!（　　）

8．-It's hard to learn a foreign language．
-Yes，I know．But I will never ．（　　）

7．There a supermarket near my home．It's very convenient．（　　）

6．I am sick，and I don't feel like anything．（　　）

5．-Please to turn off the lights when you leave．
-OK．（　　）

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