__________ full preparations, we decided to put off the meeting till next week.
| A．We did not make | B．Having not made |
| C．We had not made | D．Not having made |
Chinese students usually spend ______ the students of the US studying in their free time.
| A．twice as many hours as | B．as twice many hours as |
| C．twice hours as many as | D．as many as twice hours |
. She has a strong belief that she will ______ her country to take part in the Olympic Games.
| A．present | B．preserve | C．represent | D．direct |
With all his efforts, ______ he made such great progress.
| A．no wonder | B．no doubt | C．no problem | D．no hurry |
______ is even more important is that water began to appear on the earth’s surface.
| A．Whether | B．That | C．What | D．Which |
I regret ______ you that you have not been chosen for the performance.
| A．telling | B．to tell | C．having told | D．to be telling |