题目

Everyone of us has many responsibilities ______us．So we must work hard． A．attaching                        B ．attaching to               C．attatched with                  D．attatched to   答案： D   考查分词的用法。此处attatched to us作定语，我们每个人都有依附于我们的责任。所以我们必须努力学习。  

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