The principal suggested ____ more exercise to build up our health.
| A．us to do | B．we would do |
| C．our doing | D．we did |
Despite some difficulties，China has achieved a lot in the past year ______ .
| A．off balance | B．in the balance |
| C．on balance | D．on the balance |
After you have used the dictionary, please put it back ______ it belongs.
| A．to whom | B．to which |
| C．what | D．where |
A wonderful idea suddenly occurred to me ______ I would turn to the reference book to finish my homework.
| A．that | B．if |
| C．when | D．which |
Never before ______ so highly successful in his attempts to forecast the weather accurately on a small scale.
| A．man has been | B．man is |
| C．has man been | D．will be man |
There is not much time left, so I won't tell you about it ______ .
| A．in detail | B．in brief |
| C．in short | D．in all |