Переделать в косвенную речь
"I`ve just a letter from my sister" .
"I`m pleased to hear it. I remembered you were worries because you were worried because you hadn`t heard from her for a long time. "
"Yes, but there was nothing to warry about. She is just been to buse to write"

"Look, there`s an empty seat over there."
Yes, let me go and find out wheather it`is vacant"
"Excus me, it this seat vacant?"
"No, I`m afraid it is taken"
"Oh, dear"