生态系统中，能量沿着食物链传递、逐级递减。[]-八年级生物

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• —Where is my English book?—__________ it's in your bag or it __________ in your desk.A. Maybe;
• —May I take the magazine out of the reading room? —No, you can't. You_____ read it here. It
• My sister is ill, and shestay in bed for several days.[ ]A. need B. mustC. has to D. has to be-八年级英语
• -Can he play the guitar?-_____, and he can play it well.[ ]A. Yes, he can.B. No, he can't.C. Ye
• —I have a fever.—You _____ drink lots of water.[ ]A. are B. should C. don't D. shouldn't-八
• Dan_______come to the ceremony tomorrow. I'm not very sure.[ ]A. mayB. mustC. should D. need-九年
• —Can I park my car here?—Sorry ! Youdo it. No parking is allowed here.[ ]A. may not B. don'tC.
• I wish I _____ be a doctor.[ ]A. canB. willC. amD. could-九年级英语
• You_______ buy the TV guide for next week. I have already bought a copy. [ ]A. mustn'tB. needn&
• 改写同义，每空一词。1. How is the weather?____ ____ the weather ____?2. What can I do for you?____I____ you?3.
• 以下是我国生态农业的例子。资料一：广东利用赤眼蜂防治稻纵卷叶螟，取得了良好的效果。在华北地区利用杉毛虫、显眼蜂防治玉米螟，可以代替农药。资料二：在我国很多农村，沼气-八年级生物
• _____ you like to ring up your father? [ ]A. WouldB. Can C. ShallD. Must-八年级英语
• You____eat____food if you want to keep slim.[ ]A. should;littleB.must: littleC. should;lessD.should:
• Lookout!Theknifeisverysharp.You________cutyourfinger.[ ]A.mustB.shouldC.mayD.need -七年级英语
• You ______________ in class.[ ]A. don'tB. can'tC. notD. no-七年级英语
• That man ______ be my English teacher. He has gone to Canada.[ ]A. needn’tB. mustn’tC. can’t-九年级英语
• —What's wrong with you? You looked tired.—Last night I _____ sleep well.[ ]A.couldn'tB.wou
• 从方框中选择适当的情态动词，并用其正确形式填空。can, must1. _____ you see those people over there?2. You _____ play fire, be
• Our manager is out. _____ I take a message? [ ]A. Can B. Should C. MustD. Do-八年级英语
• “螳螂捕蝉，黄雀在后”，形容人们做事时常常顾此失彼。我国内蒙古自治区东乌旗牧区，“草肥水美”。牧民们世代在这里居住和放牧。在1960年以前的草原上还生存有狐狸、狼、野驴等-八年级生物
• Jane _________ to carry heavy things. She is very strong.[ ]A. canB. ableC. is ableD. could-八年级英语
• Ads sometimes help people learn more about new products, but at other times ads _______tell lies. [
• —What can Tony do? —He can __ the guitar. [ ]A. is playing B. playing C. plays D. play-七年级英语
• I certainly wondered what my parents _____.[ ]A. are doingB. will do C. wouldD. have done-九年级英语
• __ I get home before 7 ?no, you needn’t.[ ]A.Must B.Should C.Can D. Will-八年级英语
• All of them thought we _________ finish so much work in one day. It was too hard for us.[ ]A. canB.
• 句型转换，每空一词。1. Hello ! I'd like to speak to John.(疑问句) Hi! ___ I__to John?2. Hi! Is Wang Hua at h
• MrsSmith________beathomenow.SheflewtoHainanthismorning.[ ]A.mustn'tB.can'tC.maynotD.needn&
• You ________ go and help him with the housework.[ ]A. don't needB. not needC. needn't toD.
• —Must I take the medicine every day?—No, you______.[ ]A. must not B. may not C. haven’t D. needn
• The front road was washed away, so we _____ get off the bus and walk over. [ ]A. must B. had toC. sh
• Boysandgirls , don'tforget your report. It____ today.[ ]A. can't finishB. can't be fi
• —Mr. Wang , must I come again on Sunday morning to clean the window ?—No, you _______. I have asked
• —I hear you've got a new iPhone 4S. ______ I have a look?—Yes, certainly.[ ]A. MayB. DoC. Shall
• —______ I play football outside, Mum? —Yes, you _____, but only for an hour.[ ]A. Can; mustB. May; c
• I'm too tired, so I _______ sit down and rest every five minutes[ ]A. mustB. must toC. have D.
• Tom __ not be murderer(凶手) because I saw he was at other place at that time(在那时).[ ]A. must B. can C
• — Do you have any plans for this weekend?— I'm not sure. I _____go climbing Mount Yuntai.[ ]A.
• When the traffic lights are red, we _______ stop.[ ]A. should B. might C. mustD. may-八年级英语
• 句型转换。1. The girl is probably Jim's sister.(同义句转换)The girl_____ _____Jim's sister.2. The hi
• 用适当的情态动词完成下列对话1. A: ______I finish my homework now? B: No,you____.You____do it tomorrow.2. A: This b
• —Mum, must I stay there the whole day?—No, you_____. You_____ come back after lunch, if you like. [
• Henry___________ be at home because he phoned me from the farm just now.[ ]A. mustn'tB. isn
• —Must I finish the work before' clock?—No, you _______.[ ]A. needn't B. mustn'tC. hav
• Tom __ be murderer(凶手) because I saw he killed(杀死) her.[ ]A. must B. canC. may D. will-八年级英语
• They _______ put off the football game because of the rain yesterday. [ ]A. had to B. mustC. could D
• —May we leave the classroom now?—No , you____.You____to leave until the bell rings.[ ]A. mustn'
• —Let's go to Taishan Park by taxi.—It's not far. We____ take a taxi.[ ]A. needn't B.
• —Have you decided which senior high school to choose?—Not yet. I __________ go to Moonlight School.[
• —Meng Fei had his arm broken while recording If You Are The One in Beijing. —Really? Then perhaps he