If anyone wants to say something in class, you ______ put up your hands first. [ ]A. mustB. mayC. sh

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• Don't go hiking alone here. You _____ get lost. [ ]A. can B. must C. may D. should-九年级英语
• — ______ I visit Lucy on Sunday, Mum? — Yes, you______. [ ]A. Must; can B. May; may C. Need; need D
• —Look! The man standing there is Mr Green.— It ______ be Mr Green. He has gone to England. [ ]A．can&
• Look out! The knife is very sharp. You _____ cut your finger. [ ]A. must B. need C. should D. may -八
• You _______ worry about him. He will get well soon. [ ]A. needn't B. can't C. mustn't
• 请据图回答下列问题：（1）对吸入气体有过滤，湿润和温暖作用的结构是图一中的[______]______．（2）图二中的b代表的物质是______，血液从毛细血管[4]______端流到[5]_____
• —Tom, where is your father? — I'm not sure. He ______ in his office. [ ]A. is B. may be C. mayb
• — Listen! There is a strange noise over there. — There _____ some dangerous animals. Let's run
• Though it's cloudy now, it ______ get sunny later.[ ]A. can B. mayC. mustD. need -九年级英语
• 句型转换。1. May I smoke here? (否定回答)No, . 2. Look! There is some milk in the glass. (改为否定句)Look! There m
• 如图是人体呼吸系统结构图（1）在横线上填出各部位名称．1．______2．______3．______4．______5．______（2）人体的呼吸系统由______和______两部分构成，其中能
• The book be Lucy's because her name is on the cover. [ ]A. must B. can C. need D. does -九年级英语
• — Can you go swimming with us this afternoon?— Sorry, I can't. I ______ take care of my little
• —Must I go and repair our TV set this afternoon?—No, you _______. I've repaired it.[ ]A. mustn&
• 呼吸系统由呼吸道和______组成，后者是呼吸系统的主要器官，它是______的场所，呼吸道的作用是将吸入的空气变得______、______、______，减少对器官的刺激．-七年级生物
• — Daddy, I can see only a few stars in the sky. — Oh, my son. Many of stars ____ because they are to
• — It's the classroom! So you ______ know smoking is not allowed here.— Oh, sorry. [ ]A. need B.
• — Must I take my umbrella?— No, you ______. It's not going to rain. [ ]A. mustn't B. needn
• 呼吸系统的起始器官是（）A．鼻B．咽C．口腔D．喉-生物
• — May I have a look? — Sorry, _______. [ ]A. please B.you may C. you may not D. you mustn't -八年
• 人体的呼吸系统是由呼吸道和和肺组成，其中鼻、咽、______、气管、______组成呼吸道，是气体进出______的通道．-七年级生物
• 血液经过肺循环后，其变化是（）A．由动脉血变成静脉血B．由含养料变成含废物C．由静脉血变成动脉血D．由含废物变成含养料-九年级生物
• 人体的呼吸系统是由______和______构成的．其中，气体交换的主要场所是：______，能对空气进行处理的是______．-七年级生物
• If I went to the moon, I ______ bring something unusual back to the earth. [ ]A. can B. will C. woul
• He has bought a new car. It _______ be very expensive. [ ]A. can B. can't C. must D. mustn'
• You_______ to the meeting this afternoon if you have something important to do. [ ]A. needn't t
• —_______ you pass me a pen? I'd like to write down the phone number.—Sure. Here it is. [ ]A. Ca
• 连线题：骨骼神经系统肺运动系统心脏呼吸系统大脑循环．-生物
• The news be true. I know everything about it. [ ]A. can'tB. mustn'tC. needn't D. may
• 呼吸系统由______和______组成．其中呼吸道由______（使空气温暖、______，是气体进出肺的通道）；气体交换的场所，是呼吸系统中最重要的器官是______．-七年级生物
• I think students _______ to do homework with friends.[ ]A. should allowB. should be allowedC. were a
• Cars and buses _____ stop when the traffic lights turn red. [ ]A. canB. mayC. must D. need-九年级英语
• 下列不属于呼吸系统的是（）A．喉B．肺C．胃D．气管-七年级生物
• 如图为人体呼吸系统结构模式图．请回答：（1）图中气体和食物的共同通道是[______]______．（2）“痰液”形成于[______]______．（3）图中完成气体交换的中心场所是[______]
• — Hello. May I speak to Tom?— I'm sorry. You ____ the wrong number. There's no one here by
• 呼吸系统由______和______组成；其中______能使吸入的气体变得温暖、湿润、清洁．-生物
• 人体与外界进行气体交换的系统是（）A．消化系统B．呼吸系统C．循环系统D．泌尿系统-七年级生物
• — Must we finish the work today? — ______. But you must finish it tomorrow. [ ]A. No, you needn'
• The toy bus_____ be her brother's. He is the only kid in the room. [ ]A. will B. must C. do D.
• You _______ read when the car is moving, Karen. It's bad for your eyes. [ ]A. couldn't B.
• A．人体的呼吸系统是由______和______两部分组成的．B．血液循环的动力器官是______．人体的体循环从心脏的______出发，最后流回心脏的______；肺循环从心脏的______出发，最
• 如图是人体呼吸系统模式图，请回答问题：（1）填出图中部分序号所指结构的名称：①______③______⑤______⑥______（2）当外界气体进入①时，可以变得清洁、湿润而温暖．与这一功能相适应
• 营养物质的消化吸收依赖于______系统，包括______和______．人体消化吸收的主要场所是______．人体的呼吸依赖于______系统，包括______和______．-生物
• 如图是呼吸系统示意图，请据图回答问题．（1）呼吸系统是由______和图中的[1]______组成．（2）能让你吸人的空气变得温暖、清洁、湿润的主要结构是[4]______内的黏膜和毛细血管的作-生物
• ______是最主要的消化和吸收器官．-生物
• 呼吸系统由______和______组成．呼吸系统具有适合与外界进行______的结构和功能．-生物
• —_____I hand in my homework now, Mr Zhao?— No, you_____. You _____hand it in tomorrow. [ ]A. Shall;
• 呼吸系统的组成包括（）A．气管和肺B．呼吸道和肺C．鼻和支气管D．气管和支气管-七年级生物
• 如图是呼吸系统的模式图，据图回答下列问题．（1）填写图中结构的名称：①、______；③、______；⑤、______．（2）[⑥]______是呼吸系统的主要器官，是______的主要场所．（3）
• The man _____ walk fast because he is lame in the right foot. [ ]A. mustB. mustn'tC. canD. can&