I don't think that what he said is right 单句改错怎么改?

I don't think that what he said is right 单句改错怎么改?
I don't think that what he said is right 单句改错怎么改?

I don't think that what he said is right 单句改错怎么改?
去掉THAT.
错误原因:宾语从句连接词重复.

去掉that