Question

【题目】—What are you doing, mum?
—I ________ the house.
A.clean
B.cleans
C.am cleaning
D.is cleaning

Answer 1

【答案】C
【解析】句意：—妈妈，你正在做什么？—我正在打扫房间。根据句意及题干分析此题应用现在进行时回答，主语是I，故选C。