题目

Life is like a mirror.____________ you smile at it, it will smile back. A. Unless  B. When    C. Until   D. Though 答案：B—Daniel is studying in the USA. I wonder ______. —On the phone.A.how his parents keep in touch with himB.why his parents keep in touch with himC.how do his parents keep in touch with himD.Why do his parents keep in touch with him