Question

【题目】I remember ________ the classroom this afternoon, but now it is a real mess.

A. cleaning B. clean C. to clean

Answer 1

【答案】A

【解析】句意：我记得今天下午打扫了教室，但现在真是一团糟。Remember to do sth.：记着做某事，这件事还没有做；remember doing sth：记得做过某事；结合句意和语境可知选A。