The reason why they changed their mind______to us yet.

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问题 The reason why they changed their mind______to us yet.

选项 A、has not explained
B、has not been explained
C、did not explain
D、was not explained

答案B

解析语法题。本题考查的是被动语态和现在完成时的用法。理由被解释，应该用被动，yet是完成时的标志词。所以此题选B。本句意为：他们改变主意的原因还没有向我们解释。

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本试题收录于：英语题库普高专升本分类

英语

普高专升本

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The reason why they changed their mind______to us yet.

英语

普高专升本

Mostpeopleretirefromworkbetweentheagesof60and65.Thishas【C1】consequences,oneeconomicand【C2】psychologi

Whenwewalkthroughthecity,weallexperienceakindofinformationoverloadbutwepayattentiononlytothosethatareimpo

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Since1970,millionsofenthusiasts______VitaminC,whichtheybelievecanremedythecommoncold.

Thepooroldmanwas________yesterdaywhenhewascrossingthestreet.

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It’stenyearssincethescientist_______onhislife’sworkofdiscoveringthevaluablechemical.

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