问题
选择题
—Peter, don't step on the grass.
—____________.[ ]
A. It doesn't matter
B. I can't do it
C. Don't worry
D. Sorry, I won't do it again
答案
答案：D
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—Peter, don't step on the grass.
—____________.[ ]
A. It doesn't matter
B. I can't do it
C. Don't worry
D. Sorry, I won't do it again
答案：D
力的方法，不正确的是（）