Robert is said abroad, but I don’t know in which country he is.A.have been studyingB.to have been st

题目简介

Robert is said abroad, but I don’t know in which country he is.A.have been studyingB.to have been st

题目详情

Robert is said          abroad, but I don’t know in which country he is.
A.have been studyingB.to have been studyingC.have studiedD.to have studied
题型:单选题难度:偏易来源:不详

答案

B
be said后应该接不定式形式,而且根据I don’t know in which country he is 意味着他现在仍然在国外学习,表示从过去到现在一直在做某事,要用完成进行体。所以选B,不能选D.

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