题目

 He went there, _____ some books and call on an old friend of his. A. bought    B. buying    C. buy    D. to buy 答案：D 解析: and call on暗示与前面的形式必须一致。而He went there暗示去的目的，所以用不定式作目的状语，与（to）call on并列。

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