---Boththeyoungandtheoldaregettingcrazy

问题详情：

--- Both the young and the old are getting crazy _______ WeChat(微信).

      --- I agree. Nowadays we can see many people spend their free time ______ it.

      A. about; on      B. of; for      C. in; on     D. about; with

【回答】

A

知识点：介词和介词短语

题型：选择题