请求许可与回应的表达 — 英语选择题
题目
美术课上，Tom想借用同桌Ben的彩色笔（crayons），他应该礼貌地说："______"Ben同意时可以回答："______"A. Can I use your crayons? — Sure, here you are. B. Do you like crayons? — Yes, I do. C. Where are my crayons? — They are on the desk. D. Are these your crayons? — No, they aren't.