Напишите 5 предложений с ортикалями a и еще 5 с ортикалями an

1)We have bought a car. 2)A cow is an animal. 3)Buy a milk. 4)Could you bring me a coffee? 5)There is a big painting on the wall. 1)An apple is a fruit. 2)He is an engineer. 3)He is an American. 4)I wonder if there is an accountant in the company. 5) She opened a door and stepped onto an open platform.