mary was shopping when the alien entered the supermaket用while改写该句

Mary was shopping when the alien entered the supermarket.(用while改写句子) mary was shopping when the alien entered the supermaket用while改写该句 1.过去进行时如何分辨did与was/were doing?2.单选：I _______ when he arrived.A was shopping B shopped C shopping D shops3.单选I ____ while he was playing the piano.A was shopping B shopped C shopping D shops4.填空what ______ you ____ wh Mary with her friends ____ for the whole afternoon.a.shopped b.was shopping c.have been shoppingd.has been shopping 为什么不能选a 对括号部分提问 Mary (sometimes) goes shopping.___ ___ ___ Mary ___ shopping? - Where is Mary?- She isn't here.She ____ shopping ten minute ago.A went B go C was going D goes The supermarket is far fiom Mary's house.So she ____ only one a week.A gose shopping B has been there C was shoppingD has gone there He was shopping when I saw.用was shopping提问 confidence was lacked by mary. 填空 （）was Mary bron Mary often goes shopping ______ her mother _____ Sunday Mary goes____ the Internet to go shopping填词 Mary,list,shopping,a,let,make连词成句 Mary,list,shopping,a,let,make,连词成句 Mary went shopping with her parents.（对 went shopping 提问） ___ ___ Mary ___ with her parents. it was mary who was chosen 翻译 -What did Mary say just now?---She asked me ________ 看补充 回答 55.---What did Mary say just now?---Sheasked me ________A.what areyou going to be in the future?B.when I was bornC.if I cango to the concert D.thatshe wasn’t good at sports ---Wh Mary said the money she spent yesterday in shopping __________1500dollars.A was added up to B added up to为什么不选 不应该是 钱被合计为多少吗?