What do people use the pen to do被动what（）the pen（）to do by people_英语解答

What do people use the pen to do被动
what（）the pen（）to do by people

人气：329 ℃　时间：2020-01-19 21:29:28

解答

is used
请在客户端右上角评价点“满意”即可为什么不是are？因为主语是单数the pen, 所以谓语也得用单数is