Ⅰ. 单项选择

　　1. You can’t imagine what difficulty we had ＿＿＿

　　home in the snowstorm.

　　A. walked

　　B. Walk

　　C. to walk

　　D. Walking

　　2. As a result of destroying the forests, a large ______ of desert ＿＿＿ covered the land.

　　A. number; has

　　B. quantity; has

　　C. number; have

　　D. quantity; have

　　3. —I am sorry to have kept you waiting.

　　? ______, Bill.

　　A. You are welcome

　　B. Go ahead

　　C. Don’t mention it

　　D. No problem

　　4. As you can see, the number of cars on roads ______ rising these days.

　　A. was keeping

　　B. keep

　　C. keeps

　　D. were keeping

　　5. If not ______ with practice, a theory will be useless.

　　A. combined

　　B. connected

　　C. combine

　　D. connect

　　6. Food and clothes are in ______ after the earthquake happened.

　　A. requirement

　　B. demand

　　C. request

　　D. require

　　Ⅱ. 完成句子

　　1. We are ______（感激）to you for your timely

　　help.

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