bag n. 书包；提包；袋子；口袋
1.Whose bag is this?
这是谁的书包？
book n. 书；本子
1.I have learned a lot from my books.
我从书中学到了很多东西。
pen n. 钢笔，笔
1.Take out your pens and paper to write.
拿出你们的笔和纸来书写。
pencil n. 铅笔
1.Have you got a pencil?
你有铅笔吗？
rubber n. 橡皮；橡胶；合成橡胶
1.There are a lot of rubber plantations in this region.
这个地区有许多橡胶园。
ruler n. 统治者；支配者；尺；直尺
1.Use your ruler and draw a line.
用尺子画一条线。