提一些英语问题It's twenty years < >he came to work in this school.
A.that B.since 答案是B,为什没不选A?
Stephen Hawking stressed to the interviews that his accomplishments would certainty have been achieved by others,<>
A.never had he lived B.had he never lived C.he had never lived D.never had he lived为什么选B?这句话又如何翻译?
Little < > i known when i took the trip where it could lead me.为什么用did不用had?
He did not teach himself to paint < >he was in his twenties.
这是一道填词题,我写的是before,答案是until ,不知可不可以用before?
An idea suddenly floated into the weeping sailor's mind that he really <>an appetite for a peaceful life.为什么这道提填had而不是have?