She looked unhappy.What _to he

被动语态what ______to her,she looked unhappy.A,was happened B,ha She (A) ask him (B) that why he looked so (C)unhappy?哪里错了 AB He is unhappy.Neither is she She looked unhappy because she had made _ mistakes in the En he looks unhappy what( happen) to him 填啥些原因 Almost everybody present felt unhappy ________ what he had s He stood there still and didn't know _to do next.A.what B.ho What's he/she what he/she likes? what happened to cathy she looked so(worry) he is _to our city. He looked at her when she walked b____.