The machine is easy to _______if you follow the instructions. A．be operated B．operate C．be operated ...
2022-12-18 18:43:44 56次 2014届山东省平邑县曾子学校高二期中考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The machine is easy to _______if you follow the
instructions.
A．be operated B．operate C．be operated
on D．operate on
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