尽管很失望，他还是掩饰了自己的情绪，礼貌地祝贺了对手。

Despite feeling disappointed, he ___dissembled his emotions and politely congratulated his opponent.

面对批评时，他假装同意以掩饰自己的不满。

He ___dissembled agreement to hide his dissatisfaction when faced with criticism.

当她被问及那笔钱的去向时，她假装不知情。

She ___dissembled ignorance when questioned about where the money went.