问题
选择题
—John, will you please _______ the blackboard now? It’s your duty.
—OK. [ ]
A. not clean
B. not to clean
C. to clean
D. clean
答案
答案：D
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—John, will you please _______ the blackboard now? It’s your duty.
—OK. [ ]
A. not clean
B. not to clean
C. to clean
D. clean
答案：D