A fire_____in the lower story during the midnight and soon the whole building was in flames.
| A．was breaking out | B．was broken out | C．broke out | D．break out |
_____ in the regulations that you should not tell other people the password of your e-mail account.
| A．What is required | B．What requires | C．It is required | D．It requires |
The conference has been held to discuss the effects of tourism ______ the wildlife in the area.
| A．to | B．on | C．at | D．with |
I’ve already told you that I’m going to buy it, ________.
| A．how much does it cost | B．no matter how it costs |
| C．however does it cost much | D．however much it costs |
As high school students, it’s very important to keep ourselves ______ of what’s happening home and abroad every day.
| A．to inform | B．informing | C．informed | D．be informed |
In order to protect the environment, supermarkets and stores are forbidden to ______ free plastic bags to shoppers..
A. put away B put off C. give off D. give away