she has already collected some material,but she doesn't know ()next
问题描述:
she has already collected some material,but she doesn't know ()next
A,what to do B how to do C what should she do D how she should do
答
选A,know what to do next,知道接下来干什么.
CD的正确用法是what she should do next,对照这个,CD不正确