This machine is very easy . Anybody can learn to use it in a few minutes. A．operating B．to be operat...
2022-12-13 00:48:24 143次 2014届河南灵宝第三高级中学高二下期第三次质量检测英语卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
This machine is very easy .
Anybody can learn to use it in a few minutes.
A．operating B．to be
operating C．operated D．to operate
本题链接：
