Find a mistake in each sentence:
1. How many students in this class?
2. It’s a park next my house.
3. There isn’t any sandwiches.
4. There are a notebook, keys and mobile in his briefcase.
5. There is a dictionary in your bag?
6. This is a cat in front of the fireplace.
7. There be a lot of photos of us in my web page.
Помогите пожалуйста исправить ошибки!)))

1) in the, не this2) next to, забыли to3)aren't , не isn't 5)Is There, тут вопрос7)There are , не be