My teacher is very nice. I’ll never forget the he has done for me.
A. favor
B. kindness
C. help
D. benefit
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(答案→)A. favor
B. kindness
C. help
D. benefit
解析：考查名词：A. favor喜爱，恩惠，帮助，B. kindness好心，C. help帮助，D. benefit好处，益处，句意：我的老师很好，我永远忘不了他帮我的忙。词组：do sb a favor帮某人忙，选A。