I don’t konw what i will do next改为同义句I don't konw ____ ____ _____ next是3 个空啊

I don’t konw what i will do next改为同义句I don't konw ____ ____ _____ next是3 个空啊
I don’t konw what i will do next改为同义句
I don't konw ____ ____ _____ next
是3 个空啊

I don’t konw what i will do next改为同义句I don't konw ____ ____ _____ next是3 个空啊
应填：which you'd choose