Вам нужно проверить следующие предложения:
I want to pass the exams well. I study hard this year.
- Верно.
His dog is so clever. Look! It understands everything.
- Верно.
They always make noise. I'm tired of it.
- Верно.
I am on holiday. I sleep a lot these days.
- Верно.
This coffee smells delicious.
- Верно.
She is having two brothers.
- Неправильно. Лучше: "She has two brothers."
Are you knowing it right now?
- Неправильно. Лучше: "Do you know it right now?"
We are having lunch now.
- Верно, в контексте текущего действия.
Внесите исправления в предложения 8 и 9 для корректности.