Life is like time. Once _____, it never returns.
| A．to lose | B．losing | C．lost | D．being lost |
—Tom has won the 100-meter race.
—__________! He never won it before.
| A．Congratulations | B．What good news |
| C．What a good surprise | D．How exciting the race is |
A brilliant idea occurred to him, ______ to his research in the lab．
| A．while devoting | B．while devoting himself |
| C．while he was devoted | D．while devoted |
_____ it would be silly to argue any longer ．
| A．Was that true | B．If that was true |
| C．Should that be true | D．Could that be true |
Did ______ on time make the teacher angry ?
| A．she not come | B．she not to come |
| C．not her coming | D．her not coming |
You can hardly imagine the difficulty the woman had ______ her children．
| A．brought up | B．to bring up |
| C．bringing up | D．to have brought up |