单选题 him do this job by himself?
  • A. Why don't let
  • B.Why not let
  • C.Why not letting
  • D. Why you not let
【正确答案】 B
【答案解析】这里要弄清楚why作为副词用的一些基本固定用法,表示“为什么不……”时,我们多用“why not...”或“why don't you do...”。例如:Why don't you introduce her to your parents?你为什么不把她介绍给你的父母呢?Why not go with me on a picnic?为何不和我一起去野餐呢?因此正确选择就是B。