34. Sometimes I act as a listening ear for fellow students __________ what is bothering them.
A
to take over
B
talked over
C
talk over
D
having talked over
句意：有时我充当了倾听同学们谈论烦心事的对象。
【解析思路】根据句意，此处不定式表示目的。故选A。
对非谓语动词的形式混淆不清。