The tree _________ are green in spring. A. leafs B. leaves C. leaf
路人向你表示感谢时,你应说___________ A. Thank you B.You’re welcome
你想知道物品的价格时,你应问___________ A.How much is it? B.How old are you:?
你想问Sam现在Daming在做什么,你应说____________ A.What is Sam doing? B.What is Daming doing?
你迷路时,你应对警察说____________ A.I’m lost B.I don’t know
打扰别人时出于礼貌,你应先说______________ A. Excuse me B.Sorry