Robertissaid______abroad,butId-查字典问答网

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　　Robertissaid______abroad,butIdonotknowwhatcountryhestudiedin.A.tohavestudiedB.tostudyC.tobestudyingD.tohavebeenstudying

　　Robertissaid______abroad,butIdonotknowwhatcountryhestudiedin.

　　A.tohavestudied

　　B.tostudy

　　C.tobestudying

　　D.tohavebeenstudying

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2020-07-3118:57

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阮伯仰

　　答案A此题考查非谓语动词的用法.issaidtodo结构中的不定式形式有三种,即：todo,tobedoing,tohavedone,并有相应的被动语态.做此题的关键是but从句中动词的时态,句中studied为过去时态,意味着他过去在国外学...

2020-07-31 19:01:06

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