A-A+ She decided to devote herself _______ the problem of old age.A.to studyB.studyingC.to s 2023-05-02 09:02:37 学历考试 阅读 问题详情 She decided to devote herself _______ the problem of old age.A.to studyB.studyingC.to studyingD.study 参考答案 查看解答