So extraordianry __________ that it left a deep impression on visitors.
| A．was the Shanghai 2010 Expo | B．the Shanghai 2010 Expo was |
| C．did the Shanghai 2010 Expo | D．the Shanghai 2010 Expo did |
It worried her a bit _____her hair was turning gray.
| A．while | B．if | C．that | D．for |
.____the meeting should last two days or three days doesn’t matter.
| A．That | B．Whether | C．If | D．Where |
Is _____he said really true?
| A．that | B． what | C．why | D．whether |
The question came up at the meeting_____ we had enough money for our research.
| A．that | B．which | C．whether | D．if |
___is no possibility ____Bob can win the first prize in the match.
| A．There; that | B．It; that | C．there; whether | D．It; whether |