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状语从句疑问!几个小题 求讲解“How long do you suppose it is (D) he left fo

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状语从句疑问!
几个小题 求讲解
“How long do you suppose it is (D) he left for Japan?”"No more than half a month."
A.when               B.before               C.after           D.since                   为什么不能选B?
A good storyteller must be able to hold his listeners' curiosity (D)he reaches the end of the story
A.when       B.unless         C.after            D.until                   为什么不能选B?
（C）the sun was shining I took an unbrella just to be on the safe side.
A.because                B.since             C.although          D.in case                    为什么不能选A带伞为了遮阳?
第一题：“it is +一段时间+since +过去式”的疑问形式
第二题：unless除非,until直至
第三题：just to be on the safe side为了安全起见,为了遮阳也该用太阳伞sun umbrella
再问： 第二题选unless不也讲得通么？？？
再答： A good storyteller must be able to hold his listeners' curiosity
一个好的讲故事的人一定能抓住听众的好奇心
he reaches the end of the story
他讲完故事
填上连词，再理解试试看
状语从句疑问!几个小题 求讲解“How long do you suppose it is (D) he left fo 求详解.1.How long do you suppose it is(D)he arrived there?A.whe How long do you suppose it is since he left for Europe?— No -How long do you suppose it is ______ he arrived here? How long do you suppose it is _since_ he arrived here? "How long do you suppose it is _____ he arrived here?" — How long do you suppose it is ______ he arrived here? 求解答——How long do you suppose it is___ he arrived here?——No m How long B do you suppose it lasted C,did you suppose it las How long A,you suppose did it last B,do you suppose it laste how long do you suppose it lasted?为什么用lasted而不用last -How long do you think it is _____ he arrived here?.