摘要： The writer and professor to abroad for two years. But no one knows which country he studied in. A. are said; be studying B. is said; have studied C. are said; to study D. is said; have been studying 单项填空21-25 BAABC 26-30 CBADC 31-35 CBCCB 单项填空精选29(共15小题,每小题1分.满分15分) 从A.B.C.D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该题涂黑.
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The writer and professor ______to ______abroad for two years. But no one knows which country he studied in.
A. are said; be studying B. is said; have studied
C. are said; to study D. is said; have been studying
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