—Shall we go out for a swim? —Sorry, I c
题型:选择题
问题:
—Shall we go out for a swim? —Sorry, I can't. I ______ housework for my mother now. |
A. am doing B. is doing C. are doing D. did |
—Shall we go out for a swim? —Sorry, I can't. I ______ housework for my mother now. |
A. am doing B. is doing C. are doing D. did |