题干

 We have made _____ a rule ______ in the office.
A.this, not to smokeB.it, smokingC.it, to not smokeD.it, not to smoke
上一题 下一题 0.85难度 单项选择 更新时间:2011-07-11 05:18:31

答案(点此获取答案解析)