题干

People ____________ write letters to friends and relatives, but now WeChat and QQ _________communicating with others widely.
A.used to; are used toB.are used to; are used for
C.used to; are used forD.are used to; used to
上一题 下一题 0.65难度 单选题 更新时间:2016-01-21 12:29:19

答案(点此获取答案解析)