till,until. not until.的区别?说简单点喔

哪位帮忙做几道英语复合句的选择题21-3021. ___ twenty years old . his high school education. A. Not until he was, he did finish B. Not until was he, he finished C. Till not was he, he finished D. Not unti till于not until的用法. till和not...until有什么区别? until ,not until,till的区别和用法 not...until until till三个词的区别 till,until. not until.的区别?说简单点喔 till,until,not until 是同一个意思吗 __did the students realize that they were mistaken about spidersA.it was not until then B NOT unti then Not till later 与 Not until later 的区别!RT until ,till和not untill有什么区别? it was not until yeasterday to have we knew it.为何until不能换为till? The children___leave school __five school A.I,till B.don't,until C.didn't,until D.not,until he ____ come back ____ midnighht yesterday evening.A.not;until B.didn't;until C.not;till D.don't;till Don't put off till tomorrow what can be done today.为什么不用until而是till,不是有not…until固定结构吗 Maybe i can not get the reply until/till this afternoon.Is this sentence right? not …until 的用方法,until后面加句子还是词语,这个句式和till又有什么区别, It was __________ last week that I got into touch with him.until till not until by 选哪个 When did you know it?__________me yesterday.Until you told Not until you told Not until did you tell Till when you told 选哪个