From space, the earth looks blue.This is ________about seventy－one percent of its surface is covered by water.
| A．why | B．how | C．because | D．whether |
Visitors___not to touch the exhibits
| A．will request |
| B．request |
| C．are requesting |
| D．are requested |
China has made a ___to do all it can to help the tsunami-hit regions of Asia
| A．devotion |
| B．commitment |
| C．allowance |
| D．combination |
Thinking that the police had not found enough evidence,the man denied___the murder
| A．commit |
| B．to commit |
| C．committed |
| D．committing |
—___the sun ,the meat becomes dry
—What you say does make___
| A．Exposed to;sense |
| B．Exposing to;sense |
| C．Exposed to;senses |
| D．Exposing to;a sense |
I have read the material several times but it doesn’t make any____to me
| A．meaning |
| B．importance |
| C．sense |
| D．significance |