___ himself in carrying out an experiment, he can’t spare time to look after his children.
| A．Occupied | B．Having occupied | C．Occupying | D．Having been occupied |
Hurricane Sandy,one of the biggest storms ever， hit the East Coast of the US on Oct. 29，___________ transportation．
| A．shutting down | B．to shut down |
| C．shut down | D．to have shut down |
In spite of the advanced medical technology,many Americans have no ___________ to health care．
| A．access | B．entrance | C．introduction | D．devotion |
Nuclear radiation is said __________ the biggest health challenge in Japanese Earthquake over the past few months．
| A．being | B．to be | C．to have been | D．that it is |
He felt ___________ of cheating in the exam，deciding never to do such things again．
| A．shame | B．ashamed | C．sorry | D．shameful |
As was expected，that the magazine．Put out the online ___________ mademore readers pay attention to it．
| A．version | B．conclusion |
| C．admission | D．category |