—Sorry,butIhavesomethingimportanttotalktoyourmother.Iss...
问题详情:
—Sorry, but I have something important to talk to your mother. Is she in right now?
—Yes. Come in, please. She ______some cleaning in the kitchen.
A.is doing B.does C.did D.was doing
【回答】
A
知识点:动词时态
题型:选择题