You _______ worry about him. He will get well soon. [ ]A. needn't B. can't C. mustn't

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• 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
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• 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
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• 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
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• The toy bus_____ be her brother's. He is the only kid in the room. [ ]A. will B. must C. do D.
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• 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
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• The man _____ walk fast because he is lame in the right foot. [ ]A. mustB. mustn'tC. canD. can&
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• I'm sorry, I_____go now. My father told me on the phone that my mother was ill. [ ]A. can B. ma
• _____ I open the window? It's too hot here. [ ]A. Will B. Do C. Shall D. Would-八年级英语
• 如图是呼吸系统的组成示意图．下列关于呼吸系统组成和功能的叙述，不正确的是（）A．①是鼻腔，其黏膜分泌的黏液就是“痰液”B．②既是食物的通道，也是空气的通道C．⑥是呼吸系统的主要-七年级生物
• Lin Jun's name is on the dictionary. It ______ his. [ ]A. was B. has been C. must be D. will be
• 人体的呼吸系统是由______和______组成，它的主要功能是______．-生物