题目内容
完成句子
He has developed a good habit of early going to bed and early getting up,which ,of course,is ________(有很大的好处)to his health．(benefit)
答案：of great benefit
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完成句子
He has developed a good habit of early going to bed and early getting up,which ,of course,is ________(有很大的好处)to his health．(benefit)
科学实验活动册系列答案