将下列句子改为否定句。1. Mrs Green is my history teacher.Mrs Green _____ _____ my history teacher.2. Her father

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• — Be quiet, the head teacher Mr. Gu is coming.— Don’t worry. It _____ be him. Mr. Gu is much fatter.
• — Simon, when are we going to have a class meeting this week?— Sorry. Ask our monitor, please. He kn
• --Must I finish my homework now?--No, you _______ You can do it tomorrow.A. can't B. needn'
• －Two hundred yuan for such a T-shirt! You ______ be joking!－I’m not joking . It’s made of silk.A．can
• —–I think the man over there must be Tom.—–It _____ be him. He has ______ to America.A．can’t；goneB．c
• 如图表示生态系统的组成，图中X、Y分别代表（）A．绿色开花植物、酵母菌B．绿色开花植物、蝗虫C．生产者、酵母菌D．消费者、草-八年级生物
• 用am, is或are填空。1. He _____ my cousin.2 What_____ these?3. Here _____ two eggs for your sister.4. ____
• 从生态系统的组成来看，洞庭湖中的所有鱼属于（）A．生产者B．消费者C．分解者D．非生物成分-八年级生物
• You _________ get up so early. It’s weekend today.A．mustn’tB．can’tC．needn’tD．oughtn’t-九年级英语
• I’m very glad I have my own room in my house. I ____ do all I like in it.A．can B．must C．willD．need-九
• —Must I pay for the bill now, boss?—No, you __________ pay for it after the meal.A．needn’tB．can’tC．m
• —Must I finish the homework tonight?—No, you.You can finish it tomorrow.A．mustn’tB．needn’tC．need D．m
• —You look pale. What's wrong with you?—I_____ terrible. I think I have the flu.[ ]A. feelB. fel
• —Could I invite my friends to my birthday party?—Sorry, you ______.A．canB．can’tC．couldD．couldn’t-九年级
• Her shoes _____ twenty dollars and his T-shirt_____ also twenty dollars.[ ]A. are;are B.are;is C.is;
• 用所给词的正确形式填空。1. That ______ (sound) interesting. 2. ______ you ______ (have) a tennis racket? 3. My b
• 如图表示某生态系统中生物之间的食物关系．据图回答：（1）从生态系统的成分看，水稻属于______，青蛙属于______．除了图中表示出的成分外，该生态系统还应有______、非生物的物质-八年级生物
• –– ________ I come back before 6 o’clock?–– No, you _______ . But you ______ be back later than 7 o’
• ---Shall we meet at the station at 7 am?---In fact, we _______. The train _______ until 9 a. m.A．mus
• -I walk such a long way on such a hot day .-Oh, dear ! You____ be tired and thirsty. Sit down and ha
• ---I don’t want to go to school on foot. What should I do? ---You try asking your father for a bike,
• –Look at that red bike, it _____ belong to you. I have seen you ride it. --But it ____ be mine. Mine
• The class meeting _____ from 3:00 to 4:00 yesterday.[ ]A. beganB. startsC. lasted D. started-八年级英语
• —Can you swim in the river? — No, I _____. [ ]A. mustn't B. may not C. can't D. needn'
• — Who is the man in front of our classroom? Is it Mr. Zhang? — No, it ______ be him. He is much tall
• I want to _____ in the music club.[ ]A. amB. beC. isD. are-七年级英语
• 下列关于生态系统的能量流动的叙述中错误的是（）A．能量是沿着食物链依次流动的B．能量在生态系统的流动时单向的C．能量在沿食物链的传递过程中是逐级递增的D．能量流动是生态系统-八年级生物
• --- Shall we meet at the station at 8 a.m.?--- In fact we _________. The train _________ until 10 a.
• – May I smoke here?-- No, you ______.A. can’t B. mustn’t C. may not-九年级英语
• ---Could I have some snacks between meals, mum?---No, you __________.A．couldn’tB．shouldn’tC．can’tD．m
• ---Fifty dollars for such a T-shirt! You _______ be joking!---I’m serious．It’s made of silk.A．mustB．
• —"Do you want to go swimming this afternoon?" —"Yes, if the weather _____ warm."
• Four hundred dollars for just a pair of shoes? You ______ be joking!A．mayB．canC．can’tD．must-九年级英语
• 句型转换，每空一词。1. That is my friend. (改为复数句)Those _______ my_______.2. —Is that your mother? (作否定回答)—No,
• 如图一表示某生态系统中的食物网；图二表示的是某条食物链中三种生物体内所含有机物总量的直方图．请据图回答下列问题：（1）作为一个完整的生态系统，图一中缺少的生物成分是__-八年级生物
• 用am, is或are填空。1．I_______a boy.2．What _______ this in English?3．His name Tony.4．How ______ you?5．She
• Generally speaking, there _______ be any survivors(幸存者) after such a long time. However, two young p
• I _____ a good idea.[ ]A. think it's not B. am afraid it's not C. don't think thatD.
• ---I want to know if I can smoke here?---No, you _________. Could you see the sign “NO SMOKING” ther
• — Where’s Lucy ? — She ________ in the office. I saw her there just now.A．can’t beB．must beC．can beD
• —There is a Chinese saying, "Good medicine _____, but it's good for yourhealth. " —I
• --How does Jack usually go to school?--He_____________ride a bike, but now he_______________there to
• 下列关于生态系统中能最流动的叙述，正确的是（）A．可循环的，逐级递减B．可循环的，逐级递增C．单方向的，逐级递增D．单方向的，逐级递减-八年级生物
• 如图表示某生态系统中各生物之间形成的联系，请根据图回答下列问题：（1）作为一个生态系统，除图中已有的成分外，还应该包括______．（2）在此生态系统中，腐生细菌能将动物、植物-七年级生物
• “螳螂捕蝉，黄雀在后”中的三种动物属于生态系统中的（）A．生产者B．消费者C．分解者D．非生物部分-七年级生物
• —Whose purple coat is this?—It ____ be Lily’s. Hers is red. It _____ be Lucy’s. She likes purple.A．m
• 用be动词的适当形式填空。1. My name _____ Jack. 2. She _____Julia Roberts. 3. I _____a girl. 4. Tom and Mark ___
• —___________ he have to wear his school uniform every day?—No, he ______________.A．Must; mustn'
• ——Can I walk across the road now, mum?——No, you_______. You have to wait until the light turns green
• The food in the restaurant _____ delicious and the music sounds _____.[ ]A. look, beautifully B. sme