I really don't know how to do and where to go next.____(改错)

I really don't know how to do and where to go next.____(改错)
I really don't know how to do and where to go next.____(改错)

I really don't know how to do and where to go next.____(改错)
正确的是I really don't know what to do and where to go next.
把how改成what

how to do it 或者是what to do 可能会好一点