It is worth considering what makes "convenience" foods so popular and ___better ones of your own.introducing,我明白了是与considering并列的.be worth doing结构?doing后是没宾语的.请分析一下这是什么结构的句子?是it充当形式主语?
问题描述：
It is worth considering what makes "convenience" foods so popular and ___better ones of your own.
introducing,我明白了是与considering并列的.
be worth doing结构?doing后是没宾语的.
请分析一下这是什么结构的句子?
是it充当形式主语?
答