V. Điền a, an, some hoặc any
31, 32. I don’t have _______paper. I’ll buy _______ when I go to the bookshop.
33, 34. Is there _______ sugar left, Mum? – Yes, I bought _______ yesterday.
35. Would you like ________ can of soda?
36, 37. He always has _________egg and _________loaf of bread for breakfast.
38 We are going to plant _________trees around the schoolyard.
39. Would you like _________ help? 
40. Does Lan have __________brothers?