她正在做什么?如何表达:A.What is he doing ? B.What is she doing?
We to Harbin last weekend. A. go B. went C. goes
--- did you go to Canada? ---By plane. A. What B. Where C. How
Did you help them ____ their room? A. cleaned B. clean C. cleaning
Did you ___________? A. go fishing B. went fishing C. going fishing
What ______you do last weekend? A. do B. did C. does