Please do me a favor----_____ my friend Mr. Smith to Youth Theater at 7:30 tonight.
| A．to invite | B．inviting | C．invite | D．invited |
He has been to general manager because of his excellent work in the company.
| A．proposed | B．produced |
| C．promoted | D．programmed |
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 |