His healthy lifestyle makes a big d____ to his grades

问题描述:

His healthy lifestyle makes a big d____ to his grades
yanzidatou ,他健康的生活方式让他对分数投和热爱?

devotion,贡献
make a devotion to sth 为...作贡献
此句可理解为:他健康的生活方式为他带来高分.