what happened ______ you?you look so upset.(介词填空)

问题描述:

what happened ______ you?you look so upset.(介词填空)

to
happen to 是固定搭配,意为“发生在…身上; 碰巧”
你怎么了?你看起来不舒服。

to
请采纳,谢谢

填to
what happened to you?you look so upset.
你怎么了?看起来这么心烦意乱.

happen to sb 发生什么了?固定搭配
希望对你有帮助哦~