问题
选择题
—What are you doing for vacation? —I ______ my sister. |
A. babysitting B. are babysitting C. is babysitting D. am babysitting |
答案
答案:D
—What are you doing for vacation? —I ______ my sister. |
A. babysitting B. are babysitting C. is babysitting D. am babysitting |
答案:D