【黑龙江省龙东地区2015年中考英语试题】—Many people talk about "Didi". I really wonder ______. —You call to order a taxi through it on your mobile phone easily. A. how can I use them B. who uses them most C. what they are used for
—I’m going to spend my summer holidays in Hawaii.
—How lucky! And don’t forget to send me a postcard.
A. That sounds good. B. Have a nice trip! C. Good luck.