вставьте в предложения необходимые предлоги места и направления 
а)Lets go ... the theatre.
b)You can leave your coats ... the cloakroom.
c)Put the letter ... the window.
d)He left the key ... the carpet.

Let's go to the theatre. You can leave your coats in the cloakroom. Put the letter on the window. He left the key under the carpet.