던 ~ 았/었던 examples please and also when can I use them!

~는 것 used with verbs to describe a noun - Examples Please! Oh, I have a little doubt... when I am using this concept like this is when I want to describe the noun right? Like... "The drink that I am driking is delicious". Here Drink es being described... Is it that how 는 것 works in this way?

ㄴ/은 후에 (since) examples please! =)

이렇게 examples please! ^^

무슨 - 어떤 - 어누 Examples Please! ^^ [I miss typed 어느. I'm sorry!! ] I need examples of the most common situations where I'll find them (each one using their respective usage). Thank You!

Doubt about ~나(요) [Asking Questions Grammar] Hello, well I'm studying this grammar about doing questions with ~나(요) and I have a problem. As far as I understood, it said that is usually used with 있다/없다 verbs. But there was some examples like this: ~그 소식을 들었나요? ~어제 병원에 입원했나요? The first one is 듣다 and the second one is a 하다 verb... and thats the thing is confusing me! I don't know if I am a little bit dumb today but I can't understand well why this was used like this. Can anyone help and explain me? I will be really thankful!!