问题
选择题
—Please clean up the classroom. It's really a_____.
—OK. I'll do it at once.[ ]
A. mess
B. dirt
C. matter
D. trouble
答案
答案：A
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—Please clean up the classroom. It's really a_____.
—OK. I'll do it at once.[ ]
A. mess
B. dirt
C. matter
D. trouble
答案：A