Unit 1 练习. 请根据句意及所给汉语提示写出相应的单词。1. Its a _(浪费) of time to play computer games. 2. The doctor said Kate had a serious illness. Kates mother felt _(无望的).3. Empty bottles and old newspapers can be _ (再利用).4. The form shows how much _ (能源) you can save in a year.5. Gold and silver are both _ (金属). 请用括号中所给单词的正确形式填空。1. It is a shame to be so _ (waste).2. Many fish have died because of water _ (pollute).3. This magazine has over 200,000 _ (read).4. I want to get some information about _ (environment) problems.5. _ (thousand) of trees were planted last year. . 请根据汉语意思完成英语句子，每空一词。1. 那个标志警告儿童上学途中要小心汽车。The sign warns kids to _ cars on their way to school.2. 记得别把车票扔掉。Remember not to _ the tickets. 3. 他不介意，事实上，他甚至很高兴。He doesnt mind. _, he is even pleased. 4. 我认识他们当中的很多人，例如约翰、彼得和汤姆。I know many of them, _ John, Peter and Tom.5. 睡觉前我把电视机关掉了。I _ the TV before I went to bed. 请根据上下文情景在每个空白处填写一个适当的单词、短语或句子。A: Hey, David! Guess what! Ill go to Zhongshan Park with my friends tomorrow.B: (1) _? A: Yes. I have been there twice.B: Oh, thats good. But I have an interesting thing to do tomorrow. Why not (2) _ me?A: Join you? What are you going to do?B: I find there is lots of rubbish in the street. It looks (3) _. Dont you think so?A: Yes, of course.B: What about collecting it?A: (4) _! We should do something to (5) _. When and how will we go there?B: Lets go there at about 8 oclock in the morning by bike.参考答案：. 1. waste 2. hopeless 3. recycled 4. energy 5. metals. 1. wasteful 2. pollution 3. readers 4. environmental 5. Thousands. 1. be careful of / about 2. throw away 3. In fact 4. such as 5. turned off. 1. Have you ever been there 2. join 3. dirty 4. Good idea 5. make our city more beautiful