Someone saw her --------here an an hour ago（原因也要） A.sit B.sits C.is sitting D.to sit
问题描述：
Someone saw her --------here an an hour ago（原因也要） A.sit B.sits C.is sitting D.to sit
答
A
答
A.sit
see sb do sth.
see sb doing sth.
所有选项只有A符合.