问题
选择题
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
答案：C
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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：C