Find the mistake and correct it
Помогите пожалуйста ​

SHE’s BEEN in Istanbul for one week.

Jane is FASTER than Margaret .

He helped HIMSELF to a piece of cake.

They live SOMEWHERE the bus station.

He LOOKS angry . Has he been arguing?

Where have you been? I’ve BEEN waiting for 45 minutes now.

He’s CLEANING the house at the moment .

She WROTE three books before she became famous.

Извини в 10 не могу найти ошибку (поэтому я просто поменяла сори)

He speaks so quick that I’m not able to understand him.