Had they known what was coming next, they _________second thoughts.
| A．may have | B．could have |
| C．must have had | D．might have had |
Three photos of a school teacher saving two children in a lake have been posted online on October 10, ________ heated discussions on Weibo immediately.
| A．to raise | B．raising |
| C．Having raised | D．raised |
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 |
Tom’s English is not good, so he devoted all his free time to __________ it.
| A．studying | B．study |
| C．studied | D．studies |
To his surprise, Jack found his son _______as Santa Claus on Christmas Eve.
| A．dressed | B．dressing |
| C．to dress | D．being dressed |
______ his expression, he didn’t _____the driving test.
| A．Judging from, go through |
| B．Judging by, get through |
| C．Judged from, pass through |
| D．Judged by，put through |