We work together to achieve our common purpose： ______ world that is safer, cleaner and healthier than______ one we found．
| A．the；the | B．a；不填 | C．a；the | D．the；不填 |
, we could forgive him for his mistakes!
| A．Were he still a child | B．If he is still a child |
| C．Did he realize he is wrong | D．He were still a child |
Not until the motorbike looked almost new repairing and cleaning it.
| A．he stopped | B．that he stopped | C．did the stop | D．that did the stop |
The man in prison insistent that he nothing wrong and set free.
| A．should do; should be | B．had done; should be |
| C．had done; had been | D．should do; had been |
It is high time that the child to the hospital.
| A．is sent | B．would be sent | C．be sent | D．were sent |
But for the help of my English teacher, I the first prize in the English Writing Competition.
| A．would not have won | B．had not won |
| C．would have won | D．have won |