题目内容
Mary and I have been close friends ______ we met each other 10 years ago.
| A．when | B．since | C．until | D．as |
B
解析试题分析：句意：自从我和玛丽在十年前见面以来，我们就成了很亲密的朋友。When当……时候 since从……以来 until到……为止 as由于，选B。
考点：考查词义辨析
We can't complain that children are cheating in examinations ______ adults themselves have set such a bad role model for them to follow.
| A．because | B．unless | C．when | D．though |
All the photographs in this book, stated otherwise, date from the 1950s.
| A．unless | B．until | C．once | D．if |
It took more than twenty years for the great artist _the painting was finished completely.
| A．as | B．before | C．after | D．when |
It was not until dark ______ he found ______ he thought was the correct way to solve the problem.
| A．that; what | B．that; that | C．when; what | D．when; that |
He went home for lunch____ the clock struck twelve.
| A．while | B．immediately | C． right away | D．at once |
David knocked at the door for nearly half an hour______Mary opened it, unwilling.
| A．when | B．while | C．until | D．before |
she was out of the room, he took a quick look at the papers on her desk.
| A．If | B．While | C．Though | D．Unless |
He was told that it would be at least three more months _____ he could recover and return to work.
| A．when | B．before | C．since | D．that |