My calculations were based on the ________ that house prices would remain steady.
| A．theory | B．assumption | C．procedure | D．regulation |
Could I speak to ____ is in charge of International Sales, please?
| A．anyone | B．someone | C．whoever | D．no matter who |
—Is there any news about my promotion?
—I regret _______ you that we’ve chosen someone else for the job.
| A．telling | B．to have told |
| C．to tell | D．to be telling |
One side of the board should be painted yellow, and _______ white.
| A．other | B．the other | C．the others | D．others |
—Are you guys ready for “The Campus Singers Competition”?
—Sure！Since we are young, try it, _____ we will regret!
| A．and | B．but | C．or | D．then |
His idea was such a good one ______ we all agreed to use it.
| A．as | B．that | C．so | D．but |