托福语法题,求详解,The telegraph,invented in the mid-nineteenth century,remained even into the 1970's-------of telecommunication.(A) a principal system(B) a system was principal(C) that was a principal system(D) a principal system when

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托福语法题,求详解,Thetelegraph,inventedinthemid-nineteenthcentury,remainedevenintothe1970''s-------oftelecomm

托福语法题,求详解,The telegraph,invented in the mid-nineteenth century,remained even into the 1970's-------of telecommunication.(A) a principal system(B) a system was principal(C) that was a principal system(D) a principal system when
托福语法题,求详解,
The telegraph,invented in the mid-nineteenth century,remained even into the 1970's-------of telecommunication.
(A) a principal system
(B) a system was principal
(C) that was a principal system
(D) a principal system when

托福语法题,求详解,The telegraph,invented in the mid-nineteenth century,remained even into the 1970's-------of telecommunication.(A) a principal system(B) a system was principal(C) that was a principal system(D) a principal system when
选C,俩逗号中间可看作插入语忽略
The telegraph remained even into the 1970's
主谓宾结构完整
那后面就是宾补或从句,选项C符合
(A) a principal system（冠词不接在名词后）
(B) a system was principal（不可以接介词of）
(D) a principal system when（关系代词不可以接介词）

C

even into the 1970's是时间状语，提前了，放在后面应该是remained a princinpal system of
telecommunication even into the 1970's.

托福语法题,求详解,The telegraph,invented in the mid-nineteenth century,remained even into the 1970's-------of telecommunication.(A) a principal system(B) a system was principal(C) that was a principal system(D) a principal system when 求老托福的听力.语法题什么都要. 英语翻译as is the way with us in Esarn.后半句含有什么语法?求详解. 求过去进行时语法详解 求英语句子成分详解.我想学语法 Here come the movie actors.语法详解?语法详解：注意事项、意思等感激不尽! 几道语法题,请详解,29.30 求SAT 新版OG 的语法题或全部题的详解[email protected] 德语语法题 求详解Ich moechte eine Tasse_.A gruenes Tee.B gruenen Tees You never know how strong you really are until being strong is the only choice you have 求语法详解 求托福真题 求托福阅读题 奔驰广告为什么是The promise of the best or nothing.而不是The promise is the best or nothing求从语法上详解 SAT语法句子改错题求详解[In recognition] to her [extraordinary] contribution to gospel music,in 1988 the National Endowment for the Arts [presented] Willie Mae Ford Smith [with] a National Heritage Award.[No error] 语法题求助++++++++++Personally I think it is the headmaster ,rather than the students,———— to blame in this respect A. is B .are C. that is D.who are求详解 求语法详解：There be句型的非谓语形式 英语中的语法宾语的用法?求详解. 求详解第七题.....求详解