Naylor ________, in a letter to his teacher, that he was addicted to the Internet.
| A．acknowledged | B．received |
| C．appreciated | D．Classified |
It came as _____ great shock to us that many people lost their lives in _____ latest earthquake in Northwest China’s Qinghai Province.
| A．a; a | B．a; the | C．/ ; the | D．the ; / |
----- Can you use chopsticks, John?
----- ________ . I once stayed in China for two years.
| A．No problem | B．It all depends |
| C．I’m sorry, but yes | D．You can forget it |
Since the Obama administration took office, the China—US relations ________ positive development thanks to joint efforts of both sides, President Hu said at the Nuclear Security Summit in Washington, April,12,2010.
| A．witnessed | B．were witnessed | C．had witnessed | D．have witnessed |
.The other day I was showing the boys the weekly chemistry experiment when, ________ I knew it, the mixture was bubbling over everywhere.
| A．if | B．before | C．though | D．unless |
It was not until all the milu deer ________ that we realized we should build a natural park to protect them.
| A．died off | B．died away | C．died out | D．died down |