×
单选题
19.Nearly three years of high school had gone by he finally realized the importance of studyinghard.
A
A. until
B
B. while
C
C. before
D
D. so that
答案解析
正确答案：C
解析：
19.【翻译】 在他终于意识到努力学习的重要性之前，将近三年的高中时光已经过去了：［精析】C until:直到为止，引导时间状语从句,常与not构成not...until结构;while：当时，引导时间状语从句;before：在……之前，引导时间状语从句，常与完成时态连用；s。that：为了，结果是，引导目的和结果状语从句: 根据句意和用法可知，选C
题目纠错
相关题目
单选题
41.I＇(1 like tomy parents＇ greetings to you and your family.
单选题
40.He yesterday morning, and would stay for three days.
单选题
39.The engineer tried tothe problem with several drawings.
单选题
38.Hethe old man with 10 pounds for bringing back his lost dog.
单选题
37.The bad weatherthe building program by several weeks.
单选题
36.The football player is hoping toto another team soon.
单选题
35.After making the speech, he went it through in his mind to reflect where hebetter.
单选题
34.The teacher asked a difficult question, but finally Petera good answer.
单选题
33.I think the whole paper has to be rewritten； only the first few paragraphs may be.
单选题
32.I don＇t know whether what he said is true, but I＇ 11 try to it.
