________they decide which college to go to，students should research the admission procedures.
| A．As | B．While |
| C．Until | D．Once |
Her health___under the pressure of work
| A．broke down |
| B．broke up |
| C．broke in |
| D．broke out |
Chinese police___a terror(恐怖)plot aiming at the Beijing Olympics,and a fight crew stopped an apparent attempt to crash a Chinese plane in a separent case,official said on Sunday
| A．broke down |
| B．broke away |
| C．broke out |
| D．broke up |
Nowadays,many experts have___rewarding the children for their good behavior
| A．promised |
| B．refused |
| C．appreciated |
| D．advocated |
I know it sounds crazy,but I can hear him!I___I can hear him!
| A．insist |
| B．promise |
| C．swear |
| D．allow |
With Christmas coming near,she lets her son___his own Christmas present
| A．elect |
| B．select |
| C．vote |
| D．choose |