I know his teacher.(改为否定句)

问题描述:

I know his teacher.(改为否定句)

I know his teacher.(改为否定句)
I don't know his teacher .a ping-pong bat。提问I have a ping-pong bat.(对画线部分提问)画线部分是a ping-pong bat。应该是:What do you have ?你有什么?谢了