The couple who were not to each other ended up in divorce.
A. mitted
B. related
C. attended
D. contributed
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(答案→)A. mitted
B. related
C. attended
D. contributed
解析：考查动词辨析。句意：没有互相承诺的那对夫妇以离婚告终。mitvt. 犯罪，做错事； 把…托付给； 保证（做某事、遵守协议或遵从安排等）； 承诺，使…承担义务。如：A thinking person must mit himself to working for peace. 一个有头脑的人必须致力于为和平而工作。
A承诺，犯罪，保证；B关系；C参加；D有利于。故选A。