They discussed how they should process the problems.They discussed __ __ process the problems.
问题描述：
They discussed how they should process the problems.They discussed __ __ process the problems.
主语从句 句型转换
答
how to
原句是宾语从句,转换成不定式,就是转换成简单句
貌似跟主语从句不搭界