The members of the club wouldn't run a _____ in entrusting（委托） the organization to an unreliable person.
| A．danger | B．risk | C．hazard | D．chance |
Mobile phone users have developed a series of symbols, such as and to show ________ they feel.
| A．which | B．when |
| C．how | D．why |
Inside the White House, there is a room called the Oval Office. That's ________ President Obama works.
| A．why | B．where |
| C．what | D．how |
________ I regret most is that I have promised to make friends with the dishonest girl.
| A．How | B．What |
| C．Where | D．That |
We can find out ________ all the excitement is about by playing QQ's “Happy Farm”．
| A．that | B．how |
| C．what | D．when |
I can't figure out ________ it is that makes him so difficult at school.
| A．how | B．what |
| C．why | D．which |