(SURPRISE) [verb] - to feel or express great surprise at somethingHe was behaving so badly at school today, I wonder (that) he wasn't sent home straight away. [+ (that) clause]I don't wonder (that) she burst into tears after the way you spoke to her. [+ (that) clause]You can only wonder at her behaviour in asking for another pay increase this year. [I]
WONDER
Meaning of WONDER in English
Cambridge English vocab. Кембриджский английский словарь. 2012