I happened to know about him from the ______(visitor) book.正确答案是visitors'还是isitor‘s

I really don't know what____him last night.A.happened with B.happened to C.has happened to D.has happened with I want to know what --------- him.A .happened B,has happened to C,is happening D,will happen to I still don't know what____to him.He ought to come now.(回答时告诉我为什么 A.had happened B.was happened C.has happened D.happened I do want to know what really happened.翻译 This happened more than once to friends I know ____in thought,I didn't know what happened at that time.A.LostingB.LostC.To loseD.I lost what happened to him at last __more than i know.A.were B.to be C.are D.is I still don't know what__while I was away from home.A:has happened B:happened I don’t know what ___ last night.用he happened 还是happened to him 为什么 I don't know what___(happen)to him 为什么填的是has happened 而不是happened I don't know what___(happen)to him 为什么填的是has happened 而不是happened 10.I didn’t know what __________ to her last night.A.was happened B.happening C.happened D.was happen do you know -------? a.what he happened b.what happened to him c.what did he happened Do you know what ___ yesterday?A.he happenedB.happened himC.he happened toD.happened to him didn't know what ___ to her last night.A.was happened B.happen C.happened D.is happened One day,I happened to talk to a stranger on the bus.One day,I happened to talk to a stranger on the bus.When he found out that I was from Chicago,he told me that one of his good friends lived there and he wondered if I happened to know him.At first I I haven't heard from Henry for a long time.But I don't know what_____to him?A.to happen B.was happeningC.has happended D.had happened i don't know whether you happened to have heard or i don't know whether you happened to hear?上面的两种说法那一个正确?