题目内容

To his parents’ great joy, all their son’s years of hard work finally ____.
A.set offB.paid offC.took offD.got off
B
考察词组。Set off 引爆 pay off取得回报 take off 起飞,腾飞 get off下车
句意为,令他父母感到高兴的是,他们儿子这么多年的努力终于取得了回报。
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