1.They must [keep their hands buhind their backs].请把[]里面的句子进行提问2.Please look after yourself and keep fit.（变同义句）Please _____ yourself and keep fit.3.Could you help me study the English?（变同义句）Could you help

WHAT MUST THEY DO?TH EY MUST DO THEIR HOMEWORK请翻译下, 辨音题,急（）里发音是否一样,打勾或×must（u）touch（ou） （）keep（ee）mean（ea） （）sing（i）sign（i） （）think（th）they（th） （）cycle（cy）nice（c） （） They must keep their hands behind their backstheir backs是宾补吧their hands 是keep的宾语吧? 1.we must go s() home after school 2.The villagers are () the factory.they keep compaining about the noiseA.pleased with B.fed up withC.worried about They must keep their clothes______.A.clean B.to cleanC.cleaningD.bo cleaning They must look after themselves and keep ________.A.clean B.happy C.good D.healthy But English people must keep a/the/不填/ distance away when they are talking. you must keep your You must keep ( ) clean and tidy.a.they b.them c.their d.theirs 为什么 如题 They can keep a great d______of water.We must get rid of this kind of bad b_____ Biologists must constantly keep in mind that what they see was notdesigned,but rather evolved. -- Francis Crick When they pass tne coin ,other students must keep their eyes ____A、close B、closing C、closed D、closes 1,Thank you for ______me to the meeting.(invite)2,Children must keep themselves_______when they are alone at home.(safely) We must keep away from some___,for they will do harm to our health.chemistry chemists chemical chemicals we must keep our classroom( ). you must keep it well? We must keep ____(health) ok you must keep your