问题
选择题
He went there, _____ some books and call on an old friend of his.
A．bought
B．buying
C．buy
D．to buy
答案
答案：D
选D。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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