It is worth considering what makes“convenience”foods so popular and better ones of your o

问题补充：

It is worth considering what makes“convenience”foods so popular, and better ones of your own.

A. introduces

B. to introduce

C. introducing

D. introduced

答案：

A. introduces

B. to introduce

(答案→)C. introducing

D. introduced

解析： 本题句意为“值得考虑一下什么使得方便食品这么受人欢迎，并且介绍一下你自己比较喜欢的那些食品”。And 连接consider 与introduce，故introduce 也要用doing 形式作为worth 的宾语使用。