Question

Can you check these two sentences , please?

I teach (German) to students who specialize in applied sciences.
She requested me to print the document.
They feared ther father would scold them if he found (caught) them playing in that field.
She promised (to her mum) she woul keep the house together after her death.
All her relatives had died (were already dead is possible?)
I can't help meeting you. I'm looking forward to meeting you.

Answer 1

The 2nd sounds a bit awkward. "She asked me to print the document." OR "Sh e requested that I print the document."

ther = their father

Yes, (were already dead) is possible.

Sra