Помогите пожалуйста.
1. Вставте is или are
1) There is\ are a sofa in front of the window.
2) There is\are two cats on the sofa
3) There is\are some books next to the sofa
4) There is\are some glasses in the cupboard
5) There is\are a ball under the cupboard
6) There is\are a lamp behind the books

1. is

2. are

3. are

4. are

5. is

6. is