商家必须遵守承诺，兑现所有退款要求。

The store must ___honor all refund requests as promised.

学校举办了特别活动来表彰那些在社区服务中表现突出的学生。

The school held a special event ___honoring students who excelled in community service.

银行因签名不符拒绝兑现这张支票。

The bank refused ___to honor the check due to a mismatched signature.