Always read the label ______ you wash your clothes．
| A．before | B．unless | C．since | D．until |
There is a new problem involved in the popularity of private cars ______ road conditions need ________.
| A．that; to be improved | B．which; to be improved |
| C．where; improved | D．when; improving |
---I'm sorry. I_____ at you the other day.
-----Forget it. I was a bit out of control myself.
A shouldn't shout B. shouldn't have shouted
C. mustn't shout D. mustn't have shouted
Once______ a difficult and even dangerous place______，Vietnam is now a friendly destination that welcomes visitors from all over the world.
| A．considered; visiting | B．considered; to visit |
| C．considering; visiting | D．considering; to visit |
-----Do you think we should accept that offer?
-----Yes, we should, for we such bad luck up till now, and time_________ out.
| A．have had; is running | B．had; is running |
| C．have; has been run | D．have had; has been run |
Don't just wait．You should try to seek for information you need.
| A．to inform | B．to be informed | C．for informing | D．for being informed |