The tool with _____he is working is called a pump.

问题描述:

The tool with _____he is working is called a pump.

The tool with which he is working is called a pump. 相当于The tool which he is working with is called a pump.他用的工具叫抽水泵He is working with a tool (which is) called a pump.也表达同样的意思be wor...