Here are the best answers for the blanks in the text:

1. **rooms** (A)
2. **is** (A)
3. **has** (C)
4. **next** (A)
5. **brush** (B)

So, the completed sentences would read:

"Hello, my name is Alice. I live in a small house with my family. My house has four **rooms**: a living room, a kitchen, a bedroom, and a bathroom. The living room is very cosy. There **is** a big sofa, a TV, and a small lamp. In the kitchen, we **have** a table, four chairs, and a stove to cook food. My bedroom is my favourite room. There is a bed, a desk, and a bookshelf **next** the window. The bathroom is small, but it has a shower and a sink to **brush** my teeth. I love my house because it is very nice and comfortable."