—I’m sorry I stepped on your foot; it was an accident.
—It wasn’t! You did it .
A. as usual
B. on purpose
C. at an end
D. right away
网友回答
A. as usual
(答案→)B. on purpose
C. at an end
D. right away
解析：句意：上文，很抱歉，我踩了你的脚；这是一次意外。下文，不是，你是故意的。as usual像往常一样 on purpose故意地 at an end结束 right away马上，选B。