Choose the correct option

1. [Is|Are] there sweets in the box?
2. There [isn't|aren't] any cheese in the fridge.
3. There [is|are] a dog under the chair.
4. [Is|Are] there tea in the teapot?
5. There [is|are] three cups in the sink.
6. There [isn't|aren't] any people in this house.