他在演讲中犯的错误给公司造成了巨大损失。

His speech ___blunders caused huge losses for the company.

他在报告里犯了个大错，把两个客户的数据搞混了。

He ___blundered in the report by mixing up two clients' data.

她喝醉后在黑暗中跌跌撞撞地走向门口。

She ___blundered toward the door in the dark after drinking too much.