Помогите что вставить:…

Помогите что вставить: 1. There are two desks next to / in / on the window2. There is no pantry on / in / at his flat3. There is a nice carpet at / on / in the floor4. I share a large room of / from / with my brother5. There are many interesting books at / on / in the shelf. На переводчике не получается