___________
[A] with [B] about [C] among [D] by
请帮忙给出正确答案和分析,谢谢!
________________[A] puzzled by [B] hostile to [C] pessimistic about [D] unprepared f
_________(55)A.at B.toC.by D.with
_________(55)A.by B.withC.about D.of
_________(55)A.by B.inC.to D.with
_________(57)A.by B.throughC.with D.from