Вставь предлоги By,for,at,on,in (3) 1. We put a carpet ____ the floor. 2. ____ the age of seven Russian children start school.

Вставь предлоги By,for,at,on,in (3) 1. We put a carpet ____ the floor. 2. ____ the age of seven Russian children start school. 3. What interesting thing do you learn ____ class? 4. Do you learn poems ____ heart at school? 5. He left Kiev _____ Moscow. 6. Meet me ____ the morning at 7. 7. What can you see ____ the picture? Заранее спасибо!!