could you tell me what happened tina 这里到底用 to 还是on?

I’d like to know what have happened on you.Could you tell me ( )Could you tell me-----?A.what happened to him B.what did Could you tell me what to do next 与Could you tell me how to Could you tell me ___ to do next,please?填what还是how? 英语翻译翻译是：Could you tell me what time is it?还是：could you tell could you tell me what to do with. Could you tell us what happened( )this morning? could you tell me ______ to get the museum?为什么用how不用what? could you tell me what _____like could you tell me what like? could you tell me where to stay?为什么用to .1、Could you tell me ____ A、what to do itB、how to doC、what's