What did you have for lunch?中的for是什么意思,词性是什么.这里为什么不用our求大神帮助

What do you usually have for lunch?还有 这里的have for do what for have you lunch 连词成句 是什么 what do you have for lunch/答语 what do you have for lunch on What do you have for lunch What do you have for lunch? What do you usually have for lunch? What did they for lunch? what did you have for your dinner yesterday是什么意思 what do you eat for lunch是什么意思 单项选择.1.what did you have ____ your lunch?A.at B.for C.with2. What did you have for lunch?I had ___sandwich _____france fi