What is the_________food in England?I think it is________答案是 most populay,fish and chips为什么fish and chips用is呢?

What is the_________food in England?I think it is________答案是 most populay,fish and chips为什么fish and chips用is呢?
What is the_________food in England?I think it is________
答案是 most populay,fish and chips
为什么fish and chips用is呢?

What is the_________food in England?I think it is________答案是 most populay,fish and chips为什么fish and chips用is呢?
fish and chips 是单数
意思是炸鱼薯条 ,一种英国小吃

chips确实是复数，但是和fish放在一起就统一作为一道菜讲了，是单数

most popular（最受欢迎的···）
fish and chips用is是因为这个本身就是一个词组。你可以把fish and chips当作是菜名，所以就用is咯～