题目内容
( ) 6. ―John,will you please the blackboard now? It's your duty.
— OK.
A. not clean B. not to clean C. to clean D. clean
D
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题目内容
( ) 6. ―John,will you please the blackboard now? It's your duty.
— OK.
A. not clean B. not to clean C. to clean D. clean
D