1、1Unit2 Topic3SectionA 基础知识检测一.根据句意及首字母提示补全单词。1. To keep the children safe，all the workers are trying their best to b the bridge.2. The students study harder and harder. F , their dreams came true.3. Many young students like working on the I for a long time. Its bad for their eyes.4. Excuse me, where
2、 is Miss Hu, Liu Ming? I have some q to ask her.She is in the office.5. We should do our best to p all kinds of diseases.二. 单 项 选 择 。( ) 1. May I use your bike, Jim? Sure, .A. go ahead B. you can ask BillC. you cant D. thats all right( ) 2. Must I take part in the activity?No, you . Youre too young.
3、A. mustnt B. dontC. dont have to D. dont need( ) 3. Youd better wash your hands before meals you healthy.A. keep B. keptC. keeping D. to keep( ) 4. How should we fight the flu?We should do more and change clothes often.A. exercises B. exerciseC. practice D. homework( ) 5. The meeting is starting. Im afraid we leave now. OK. Lets go.2A. must B. have to C. can D. may参考答案：一. 1 build 2. Finally 3. Internet 4. questions 5. prevent二. 1. A2. C 由 must 引起的一般疑问句，其否定回答用 neednt 或 dont have to。3. D 考查动词不定式作目的状语。4. B exercise 作“运动”解时，是不可数名词。5. B must 和 have to 的区别是 must 表示主观原因，而 have to 表示客观原因。根据句意，应选 B。
