题目内容
It was quite a long time ______ I figured out what had happened to the manager.
| A．after | B．before | C．when | D．since |
B
解析试题分析：句意：有很长时间我才弄清经理发生了什么。这句话用了固定句型：It was+一段时间+before+从句，表示“过了很长时间才/就….”如果是It is+一段时间+since…，自从…有多久了，选B。
考点：考查固定句型
__________ you understand the rule, you will have no further difficulty.
| A．While | B．Once |
| C．Though | D．Unless |
The old lady could give the child sympathy, ________ any practical help would be beyond her.
| A．or | B．so | C．and | D．but |
_____Craig loves his students, he is very strict with them in their performances.
| A．While | B．Whenever | C．As if | D．The minute |
Attractive ________ the device might seem, “my wife has already done that by herself” was a common response after people seeing it when it was introduced on show this week.
| A．while | B．although | C．as | D．when |
---Can I pass the exam this time，Mr.Li?
---I don’t think you can________ you work hard.
| A．unless | B．until | C．if | D．when |
Relax yourself every day, ________ you'll be too tired to get good grades.
| A．and | B．or | C．for | D．but |
Many of them turned a deaf ear to his advice, ________ they knew it to be valuable.
| A．as if | B．now that | C．even though | D．so that |
Scientists say it will be five or six years __________ it is possible to test this medicine on humans.
| A．after | B．before | C．since | D．when |