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随堂演练及时体验巩固提升Ⅰ.用适当的介词、副词填空1．Whenspacemengetclosertothemoon,theygraduallybecomeweightlessandfloat________inspaceshipcabin.答案around2．Walkingonthedarkroad,Ifell________abranch.答案over3．Usingthecomputerisn'tdifficultonceyougetthehang________it.答案of4．Canyouhelpme________mywork?答案with5．Ithinkyoumaybeverydisappointed________me.答案with6．Theideaofgravityhasdeveloped________alongperiodoftime.答案over7．YangLiweiwasluckyenoughtobechosentomakeatrip________space.答案into8．Astherocketrose________theair,wewerepushedbackintoourseats,unabletospeak.答案into9．WhenIgotcloser________him,IfounditwasTom.答案to10．Abigfirebroke________inhishouselastnight.答案outⅡ.完成句子1．________________(确保)thedoorislockedwhenyouleave.答案Makesure2．Afire________________(发生)atmidnight,butluckily,itwassoon________________(扑灭)．答案brokeout;putout3．Afterseveraldays'practice,I________________________________________(掌握了游泳的诀窍)．答案gotthehangofswimming4．Hehas________________________(两倍)booksashisbrotherdoes.答案twiceasmany5．________________________________________________(既然你长大了),youmuststopthischildishbehaviour.答案Nowthatyouhavegrownup