i don't know (what to say or do)/(what to say and to do)选哪个?为什么?_英语解答

i don't know (what to say or do)/(what to say and to do)选哪个?为什么?

人气：477 ℃　时间：2020-03-19 22:12:14

解答

i dont know what to say or do.
否定句里面,and 通常转化为or
do 前面的to,与第一个to重复,因此可以省略