Tom’s brother who is now a doctor always encourages hard and go to college. A. for him stu

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A. for him studying
B. him studying
C. for him to study
(答案→)D. him to study
解析：本题考查encourage的用法。句意“汤姆的一个做医生的哥哥总是鼓励他努力学习，考上大学。”encourage sb. to do sth.“鼓励某人做某事”。故选D。