单词	单个选择
释义	单个选择 single selection
随便看	letter of recall LetterOne letter on the matter letter of recommendation Letter of Recommendation-See the attachment letter of reference letter of regret letter of release letter of remittance letter of renunciation letter of representation letter of reprisal letter of request letter of resignation letter of retification letter of retirement letter of right letter of rights letter of self-recommendation letter of set-off letter of stock letter of subrogation letter of support letter of sympathy letter of testamentary