阅读理解。 Welcome to my shop This is my shop. It's near a school. There're many things in it. All students like to buy things here. Look! Here are ten pencils. They are pink and blue. They are on sale . You can buy a pencil for only 0.4 yuan. Do you like flowers? Here are five red flowers on the desk. One flower is one yuan. Do you see seven keys on the chair? They are black and look very nice. You can open the pencil-boxes with them. It is two yuan. The pencil-boxes are on the desk, too. Every pencil-box is five yuan. If you are hungry or thirty, you can also come to my shop and enjoy yourself. 1. You can open the _____ with the keys. A. doors B. windows C. pencil-boxes D. desks 2. What colour are the pencils? A. Pink and blue. B. Pink and red. C. Red and black. D. Blue and black. 3. The word 'on sale' means (意思是) _____ in Chinese? A. 展示 B. 出售 C. 表演 D. 拍卖 4. Lily has ten yuan, and she can buy five pencils, one pencil-box, _____ key(s) and one flower. A. one B. two C. three D. four 5. What ca n't you do in the shop? A. buy some stationery B. eat or drink something C. buy some  flowers D. play with balls