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1、Unit 3 练习. 下面有几组易混词语，请从中选择适当的一项填空。 borrow, lend1. May I _your car?2. Can you _me some money? forget, leave3. Sorry! Ive _my homework at home.4. Sorry! Ive _your phone number.from now on, from then on5. _they lived a happy life.6. _Ill be busy with my work.at a time, for a time 7. Youd better buy one
2、 hamburger _.8. He kept the stamp _and then gave it to John. 请将下列各句改为被动语态，每空一词(含缩写)。1. They have washed the dirty clothes. The dirty clothes _by them.2. Parents should allow fourteen-year-olds to choose their own clothes.Fourteen-year-olds _ to choose their own clothes.3. Must we repair the computer
3、 now?_the computer _now?4. They havent put up the notice on the wall yet.The notice _on the wall yet.5. What should we do to help them?What _by us to help them?6. Has Tony cleaned the classroom?_the classroom _ by Tony?. 请用括号内所给单词的适当形式填空。The first bicycleBicycles (1)_(share) a common advantage with
4、the automobile over publicmodes of transport. The first bicycle was not like the bicycle we see today. The first bicycle (2) _ (invent) by Baron von Drais in the 1810s. It was a (3) _ (walk) machine made of wood. It had no pedals （踏板）. People (4) _ (push) their feet against the ground to move forwar
5、d. It helped people get around parks and gardens. Now bicycles (5)_ (be) widely (6) _ (use) by people all over the world. 请根据以下提示写一个至少五句话的小段落，注意用到被动语态句子。世界上第一部手机于1973年由马丁库珀(Martin Cooper)发明。现在，手机在世界上被广泛使用，并且可以随身携带。中国已经有5亿多人使用手机。我们相信，越来越多的手机将会在未来投入使用。_参考答案：. 1. borrow 2. lend 3. left 4. forgotten 5.
6、From then on 6. From now on 7. at a time 8. for a time. 1. have been washed 2. should be allowed 3. Must; be repaired 4. hasnt been put up 5. should be done 6. Has; been cleaned. 1. share 2. was invented 3. walking 4. pushed 5. have been / are 6. used. One possible version:The first mobile phone in the world was invented by Martin Cooper in 1973. Now mobile phones are widely used in the world. They canbe carried everywhere easily. In China, they are used by more than 500 million people. We believe that more and more mobile phones will be used in the future.2