be helpful to 后面接doing 还是do2012年新东方考研冲刺班必背作文上有这么一句话：Your active participation is helpful to strengthening the sense of reponsiblity and managing interpersonal relations.这里是不是有问题 应该用的是strengthen和manage吧
问题描述：
be helpful to 后面接doing 还是do
2012年新东方考研冲刺班必背作文上有这么一句话：Your active participation is helpful to strengthening the sense of reponsiblity and managing interpersonal relations.这里是不是有问题 应该用的是strengthen和manage吧
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