Thoughthetrainingcostalotoftimeandeffort,Idothinkit 国语站 题库 3.22W 大中小设置文本大小 问题详情:Though the training cost a lot of time and effort, I do think it ____. A. valuable B. significant C. worthwhile D. vital【回答】C知识点:单词题型:选择题 TAG标签:#