In front of our house ____ we used to swim.
| A．a river lies that | B．does a river lie where |
| C．lies a river which | D．lies a river where |
There have been several new events ______to the program for the Beijing Olympic Games .
| A．add | B．to add | C．adding | D．added |
Wang Wei had served ______a volunteer for three years before he graduated from college .
| A．as | B．for | C．at | D．in |
The little boy ,out of curiosity ,_______the toy to see how it worked ,but couldn’t put it together .
| A．took apart | B．broken down | C．burst into | D．knocked off |
They have always treated us with open hands and we must be generous _______.
| A．in return | B．in addition | C．in vain | D．in case |
The chief editor expressed his doubt _______senior people would enjoy reading such magazines .
| A．which | B．how | C．whether | D．that |