Unit4 Topic 3课题Unit4 Topic 3 语法整合课型探究课课时( )1MrLi asks the students_in the river,because its too dangerous(20 1 2重庆) Aswim Bto swim Cnot to swim Dto not swim( )2Lucy and I are twins,but were different_ each other in many ways(2012吉林) Afor Bin COf Dfrom( )3How do you communicate(交流)with your foreign friends? - _ writing emails,of course(2012宁夏) AWith BBy CAt DFrom 解析:考查介词的用法。根据询问“你怎样与外 国的朋友交流可