—What are these?—Oh,a set keys .They're mine.这句话哪里错了
问题描述：
—What are these?—Oh,a set keys .They're mine.
这句话哪里错了
答
—What are these? —Oh,a set of keys .They're mine.
这些是什么？
啊，一串钥匙。我的钥匙。
答
a set of 一串
a set of keys 一串钥匙
少了of