前辅文 UNIT1 Have you ever heard about the Silk Road? UNIT2 Daddy just doesn’t know how to show love. UNIT3 Would you like a cup of coffee? UNIT4 The roofs of cities are becoming green. UNIT5 How to behave well when eating in a restaurant? UNIT6 Have you ever used bike sharing? UNIT7 Do they live a happy life? UNIT8 Let’s enjoy the drama! 答案
