Warm-up Lesson 59 Is that all? envelope an envelope 一个信封 Time for fun writing paper 信纸 write 写——writing paper 纸 a piece of writing paper 一张信纸 shop assistant 售货员 shop 商店 assistant 助手 size n. 尺寸,尺码,大小 large small medium pad 信笺簿 glue 胶水 a bottle of glue 一瓶胶水