—These days，he has stayed up late into night in order to get good marks in the following monthly test.
—It's no ________ that he seems tired and asleep in class every day.
| A．wonder | B．problem |
| C．doubt | D．question |
To , we didn’t have breakfast.
| A．save time |
| B．spend time |
| C．kill time |
| D．waste time |
, a good idea occurred to him.
| A．After a while |
| B．For a while |
| C．At the while |
| D．A great while |
Not until he retired from teaching three years ago having a holiday abroad.
| A．he had considered |
| B．had he considered |
| C．he considered |
| D．did he consider |
Two lawyers have donated $50,000 to ________ our school's campaign "Help the Needy", whichwas started by our former headmaster three years ago.
| A．sponsor |
| B．launch |
| C．organize |
| D．plan |
The experiment shows that proper amounts of exercise, if regularly, can improve our health.
| A．being carried out |
| B．carrying out |
| C．carried out |
| D．to carry out |