If our parents don't allow us to do so in the f______ we may not know how to do itf什么.

If our parents don't allow us to do so in the f______ we may not know how to do itf什么.
If our parents don't allow us to do so in the f______ we may not know how to do it
f什么.

If our parents don't allow us to do so in the f______ we may not know how to do itf什么.
in the future.
and for the question above should be "in the end",it is a similar question.

future未来我们就不知道如何去做