when和untilIt was used from about 200 BC to about 1300 AD,—— sea level offered new routes扩折号里为什么不填until而填when

when和untilIt was used from about 200 BC to about 1300 AD,—— sea level offered new routes扩折号里为什么不填until而填when it was not until和it was untilIt ___ we had stayed together for a couple of weeks ___ I found we had a lot in common.选项 A.was until ; thatB.wasn't until ; that答案是选B,但是我怎么感觉两个意思一样呢? Scientists say it may be ten years _____ this medicine was put to use.A since B before C after D.when 给出正确答案,理由和翻译 Scientists say it may be ten years _____ this medicine was put to use.A since B before C after D.when 给出正确答案,理由和翻译 when i was young ,i always ___(think)learning is not ___(use) We can use 'when' when it was ()the violence subdued that he was able to return to his hometown. A,untilit was ()the violence subdued that he was able to return to his hometown.A,until B,no later than C,till D,not until I____in this small mountian village when I was a child的答案和讲解A use to be B used to living C used to live D used to life 为什么第一个first和第二个first用法不一样,一个有定冠词the ,一个后面加to ,为什么When did people first begin to use stamps?Who was the first to think of this idea? in use 含义在Paper money was in China when Marco Polo visited the country in the 13th century.中in use的含义. he could use computers well when he was ten years old同义句he __ __ __ use computers well ___ ___ ___ ___ ten ...was when...was...造句 Paper money was in use in China when Marco Polo visited the country in the thirteen century的意思 most of us use salt everyday.We use.英语阅读题Most of us use salt every day.We use it to make our food taste better.We think nothing of it and we use it.There was a time,however,when salt was no so common.In the ancient world,salt was luxury and when he was a small boy和when he was a little boy有什么区别? When I was younger和When I was young的区别是?哪句是对的阿? I ______ a taxi to school when it was rainingA:am used to take B:use C:was used to taking D:am used to taking marry used to get up early when she was at school__Marry used to get up early when she was at school ,______?A.wasn't she B.used she C.use not she D.didn't she