23页50.the】 book was so interesting that he had read it for three hours ----he realized itA,when B.uintil C.before 选B可以吗,不可以请说明理由,应选什么,为什么

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/24 21:07:22
23页50.the】bookwassointerestingthathehadreaditforthreehours----herealizeditA,whenB.uintilC.before选B可以

23页50.the】 book was so interesting that he had read it for three hours ----he realized itA,when B.uintil C.before 选B可以吗,不可以请说明理由,应选什么,为什么
23页50.the】 book was so interesting that he had read it for three hours ----he realized it
A,when B.uintil C.before 选B可以吗,不可以请说明理由,应选什么,为什么

23页50.the】 book was so interesting that he had read it for three hours ----he realized itA,when B.uintil C.before 选B可以吗,不可以请说明理由,应选什么,为什么
选C.一般常用not...until句型,前面通常有否定.before在这里有“不知不觉,才”的意思.