他逐渐明白正是他对弹钢琴的全情投入使他坚持不懈的努力有了价值。（worthwhile） He gradually realized that it was his dedication to playing the piano that made his persistent efforts worthwhile.He gradually realized that it was his dedication to playing the piano that made his persistent efforts worthwhile.
【考点】形容词词义辨析．
【答案】He gradually realized that it was his dedication to playing the piano that made his persistent efforts worthwhile.
【解答】
【点评】
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发布：2024/9/7 2:0:9组卷：8引用：1难度：0.5
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