—Robert is indeed a wise man.
—Oh, yes. How I regretted ________ his advice.
| A．to take | B．taking |
| C．not to take | D．not taking |
Is this the reason ______ at the meeting for his carelessness in his work?
| A．What he explained | B．how he explained |
| C．he explained | D．why he explained |
As a rough estimate, Nigeria is _______ Great Britain.
| A．three times the sizes as | B．the size three times of |
| C．three times as the size of | D．three times the size of |
The new building _____ at the end of this year _____ to that university.
| A．be completed; belongs | B．being completed; is belonging |
| C．to be completed; belongs | D．completed; is belonged |
The purpose of the campaign is to raise the public’s_______ of the dangers of passive smoking.
| A．existence | B．connection | C．awareness | D．consciousness |
A recent study has come up with _____ unexpected conclusion that ____ Africa elephants should be divided into two different species.
| A．a, the | B．an, the | C．an, an | D．the, the |