Grammar Exercise Use a/an when we can count a thing, and some when we cannot. Use an only when the next word begins with a, e, i, a, or u, or an h which is not pronounced (e.g. an hour). 1 George is eating ... meal. He is putting ... food in his mouth with ... fork. 2 Now George is putting ... butter on his bread with ... knife. 3 This is ... loaf of bread. There is ... cheese near it. 4 This is ... egg. It is in ... water. 5 This is ... glass. There is ... milk in it. 6 There is ... tea in this cup. There is . .. spoon in it. 7 This is ... cup too. There is ... coffee in it. 8 This is ,.. picture of ... table.