there are too many difficulties for us__.We really don't know __to doA、to deal with;how B、to do with;how C、to deal with;what D、to do with;What答案是c为什么?

问题描述:

there are too many difficulties for us__.We really don't know __to do
A、to deal with;how B、to do with;how C、to deal with;what D、to do with;What
答案是c为什么?

too...to 太...而不能...(短语)
deal with处理,不及物短语
do with处理,及物短语,要接宾语
后一空是kown的宾语从句,what做主语