问题
选择题
—What were you doing this time yesterday?
—I ______ on the grass and drawing a picture. [ ]
A. sit
B. sat
C. am sitting
D. was sitting
答案
答案:D
—What were you doing this time yesterday?
—I ______ on the grass and drawing a picture. [ ]
A. sit
B. sat
C. am sitting
D. was sitting
答案:D