Use a an some and write sentences

a) What's on the breakfast tray?1)There is a glass of milk on the breakfast tray.2) There is some butter on the breakfast tray.3) There are some pieces of bread on the breakfast tray.4) There is a bowl of cereal on the breakfast tray.b) What's in the pizza?1)There is a tomato in the pizza.2)There are some olives in the pizza.3)There is an onion in the pizza.4)There's a pepper in the pizza.