They used a scientific ( B ) to do a lot of researches on that subject.A.way B.method C.means D.manner其他的几个选项为什么不可以?

His parents used to play Majiang in their spare time,----- -------?A.did they.B.couldn't they.C.used they.D.used he Computers are not so expensive as they ____to be.A.useB.used C.are used D.were used he eatings were only half the amount________答案 是那个啊a as they used to b they used to c they used to bed they were used to -------- a small book store in thistown.( they used to be ,it used to have ,there used to be ,there used to have) 该选哪一个?-Do the Blacks lives next door to you?-No,but they ______?A.used to B.used to doC.are used to D.used todbe 改错：They used to taking a walk after supper when they were in that city. Having lived in France for many years,they still enjoyed the foods__in their homelandA.which were used to havingB.they were used to havingC.which used to haveD.they were used to have为什么选B不选A? When the old couple retired from their work,they moved to the countryside.Before long they found themselves quite ____________there.A.used to live B.used to living C.to get used ti living D.be used to living Do the Smiths live next to you?No,but they （）.a.used to b.used to do it c.used to be d.used选哪个,为什么详细点 如果是used to do对吗, Do they live here?no,but they __.A,used to B.used to do 正确答案为A,为何B不行? His earnings were only half the amount___ A.they used to be B.they used to 为什么选A,不选B. His earnings were only half the amount___ A.they used to be B.they used to 为什么选A,不选B. they do as they used to do The foreigners __there,but they __the food there at first.A used to live ,didn't be used to B are used to living,didn't used to C used to live,weren't used to D used to living,usedn't to 选C 为什么选C be used to do 怎么用?后一个 空 不理 反义疑问句 They used to go for a walk after dinner,______A.did they B.usedn't they C.didn't they D.both B and C There _____ a lot of tigers there,but now they are endangered.A.were used B.used to C.used to be D.used to have说明原因喔,也要整句翻译吧 They useda hose to put out the fire 的同义句 They used a hose_______ _______ the fire. 解道英语题!谢谢!说明原因!. The children everything by themselves when they are alone at home. A. used to doing B. are used to do C. are used to doing D. used to do