The mobile phone has become a major means of communication, _____us to keep in touch as well as to surf the Internet to keep us _____of the latest news.
| A．permitting; informed | B．to permit; informing |
| C．to permit; to be informed | D．permitting; having informed |
— Are you going to take part in the speech contest?
— ___________. It’s too good an opportunity to miss.
| A．No problem! | B．That’s for sure. |
| C．Why me? | D．Why bother? |
— How about camping this weekend, just for a change?
— OK, ______ you want.
| A．whichever | B．however |
| C．whatever | D．whoever |
—Was it under the tree ______ you went away talking to a friend?
—Sure. But when I got back there, the bike was gone.
| A．that | B．when | C．where | D．while |
Whitney Houston’s sudden death suggests that drug abuse is such a serious problem ______ we should deal with properly.
| A．as | B．that | C．which | D．where |
The argument is extremely heated ______ there are necessary conditions of existence such as water on the Mars.
| A．that | B．whether | C．if | D．which |