Are these OK?

1.

There were a lot of mountains.

Bir çok dağlar vardı.

2.

No one liked my Spanish.

Hiç kimse İspanyolcamı beğenmedi.

3.

Did you speak with Erol?

Sen Erol´la konuştun mu?

4.

I heard you got in trouble again from mom for listening to Turkish music.

Türk müziği dinlediğini için tekrar anneden başına bela gelmişsin.

good but i would like to say something

There were a lot of mountains.

Bir çok dağlar vardı. 

true one : Birçok dağ vardı.

     and

I heard you got in trouble again from (your?) mom for listening to Turkish music.

Annenden duydum ki, Türkçe müzik dinlerken yine başını belaya sokmuşsun.

good luck

Thanks a lot. Dağ makes sense, I forgot that one.

For mom, I should have said our mother, so Annemizden. In English you can just say mom as if it is her name but this is informal talk.

Youre welcome ok, i understood it so, we say "annemizden" or shes also my mum, maybe "annemden"

Thanks your right my sentence was unclear. But that´s more what I meant. Except our mother. Usually mom (or dad) on it´s own is said between siblings.