I don't know if she ____________ if it _____________ tomorrow.

Freedom

Felt like the weight of the World was on my ____

Pressure to break or retreat at every turn

Facing the fear that the truth I discovered

No telling how all this will ____ out

But I've come too ____ to go back now

I am looking for freedom

Looking for freedom

And to find it ____ me everything I have

Well I am looking for freedom

Looking for freedom

And to find it ____ take everything

I have

将耳朵贴在长铁管的一端，让另外一个人敲一下铁管的另一端，你会听到几次敲打的声音？最先听到的声音是由什么介质传播过来的？（　　）