My English-Chinese dictionary has disappeared.
Who ________ have taken it?
| A．must | B．should | C．would | D．could |
_________ to reach them on the phone，we sent an email instead．
| A．Fail | B．Failed |
| C．To fail | D．Having failed |
We went right round to the west coast by __________ sea instead of driving across _________ continent. 
| A．the … the | B．/ … the | C．the … / | D．/ … / |
In____review of 44 studies, American researchers found that men and women____who ate six key foods daily cut the risk of ______ heart disease by 76%. 
| A．a; the | B．the; a | C．a; 不填 | D．不填； a |
Washing machines made by China have won ____worldwide attention and Haier has become _____ popular name. 
| A．a; the | B．/; a | C．/; the | D．the; a |
People think that ______ opening ceremony of the 29th Olympic Games is _____ great success. 
| A．an; a | B．the; a | C．the; the | D．the; / |