What do you have ______ breakfast?A.at B.of C.for (选一选)

题目

What do you have ______ breakfast?A.at B.of C.for (选一选)
请给我正确的答案

答案

for
have sth for breakfast/lunch/dinner...是固定用法,表示早餐/午餐/晚餐..吃什么东西.