题目内容
(题文)—Cathy, can you answer the door? I ______ the room.
—I'm coming, mum.
A. clean B. cleaned C. have cleaned D. am cleaning
练习册系列答案
相关题目
题目内容
(题文)—Cathy, can you answer the door? I ______ the room.
—I'm coming, mum.
A. clean B. cleaned C. have cleaned D. am cleaning