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. исправить