In vain______to get in touch with the authorities.

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问题 In vain______to get in touch with the authorities.

选项 A、they tried
B、did they try
C、they have tried
D、the had tried

答案B

解析语法类试题(倒装旬)。in vain后面接倒装句。

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专业英语四级

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In vain______to get in touch with the authorities.

专业英语四级

Whatistherelationshipbetweenthetwospeakers?

Educationistooimportanttotake【C1】,whenpeopletakeanythingforseriously,theyput【C2】blinderswhichcaus

Unlikemostsports,whichevolvedovertimefromstreetgames,basketballwasdesignedbyonemantosuita【C1】______purpose.

Primaryschoolteachers’poor【C1】______ofEnglishandmathsisunderminingtheGovernment’sliteracyandnumeracystrategies,

MasstransportationrevisedthesocialandeconomicfabricoftheAmericancityinthreefundamentalways.Itcatalyzedphysical

Moreteenagerssmoketodaythanatany【C1】______sincethe1970s,afederalstudyshows.Overall,35%ofchildreningrades9—12

Hisoldshoesarewornout,sohewantshismothertobuyhint______.

Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed

Thedivorcedmotherwouldhaveherownfamily,inwhichhispositionasan______stepsonandhiseducationwouldnotbegood.

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In vain______to get in touch with the authorities.

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Unlikemostsports,whichevolvedovertimefromstreetgames,basketballwasdesignedbyonemantosuita【C1】______purpose.

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WWW是以超文本标注语言为基础,能够提供面向Internet服务的信息浏览系统。WWW系统的结构采用了【】模式。

Educationistooimportanttotake【C1】,whenpeopletakeanythingforseriously,theyput【C2】blinderswhichcaus

Mostworthwhilecareersrequiresomekindofspecializedtraining.Ideally,thechoiceofan【C1】should【C2】evenbefor