题目内容
He was so deep in thought，thinking of the problem ________ he knocked into the tree without noticing it.
| A．when | B．while |
| C．because | D．that |
解析
As a green hand, he doesn’t know______ it takes to start a business here.
| A．when | B．how | C．what | D．which |
________you’ve experienced it，you can’t understand how I felt.
| A．Once | B．Because |
| C．Unless | D．While |
If you are traveling ________ the customs are really foreign to your own，please do as the Romans do.
| A．in which | B．what |
| C．when | D．where |
I had hardly got to the office________my wife phoned me to go back home at once.
(2012·大纲全国Ⅱ，11)
| A．when | B．than |
| C．until | D．after |
I have heard a lot of good things about you ________ I came back from abroad.(2013·陕西，18)
| A．since | B．until |
| C．before | D．when |
I was wondering what to do with my car which won't start ________ a kind man offered to help.
| A．while | B．and |
| C．so | D．when |
Besides, ________ well it is translated, the spirit of the original work is lost.
| A．no matter how | B．no matter what |
| C．no matter when | D．no matter where |
________ you read English easily, you'll find it is another cup of tea to make conversation in English.
| A．So long as | B．As soon as |
| C．Even if | D．Only if |