Вставить правильный предлог а) this morning i heard a knock 1)on the door when i went to look someone had pushed an envelope the letterbox i opened it to see what was a there was a birthday card from my friend. b)tom enjoy a going the airport. he loves standing the window,watching the planes taking off and landing.he would love to travel a plan. c)susan was standing the street whenthe bus came the corner.the driver drove puddle and susan was covered in water! d)while terry was tidying his bedroom yesterday he looked the bed and found his favorite toy.he put it toy box which was the wardrobe and the desk. e) i sit my desk every afternoon. i keep all my papers the drawers. along with some pens. hanging from the ceiling the desk is a very bright light.the chair that i sit is soft and comfortable