Correct the mistake There is a book under the sofa. There are pillows behind the sofa. There is a lamp on the telephone. There are books in the shelves.

Решение:

• There is a book under the sofa. – There is a book on the sofa. (Книга находится на диване, а не под ним.)
• There are pillows behind the sofa. – There are pillows on the sofa. (Подушки находятся на диване, а не за ним.)
• There is a lamp on the telephone. – There is a lamp on the table. (Лампа обычно стоит на столе, а не на телефоне. Исправлено на "table", т.к. "telephone" не подходит по смыслу)
• There are books in the shelves. – There are books on the shelves. (Книги стоят на полках, а не внутри них.)

Ответ: on