He spoke proudly of his part in the game, without mentioning ________ his teammates had done.
| A．what | B．which | C．why | D．while |
Naomi ran a shop in Madrona for three years she decided to move into a better place nearby．
| A．once | B．since | C．before | D．after |
Li-ping is said in Beijing, but we don’t know what school she worked in．
| A．to have worked | B．to work |
| C．to be working | D．to have been working |
Despite the rise in importance of major regional languages such as Chinese, Arabic or Spanish, to ever think that the development of English can now be stopped seems totally unrealistic．
| A．voices tell | B．voices told | C．voices’ telling | D．voices telling |
President Bush was in Omaha this morning to deliver a speech, but he the city by the time the shooting took place．
| A．left | B．had left | C．had been leaving | D．would have left |
If the researchers are successful, they an important step in reproducing the way that humans use cognition（认识力）to interact（交流；互动）in their world．
| A．make | B．would make | C．will make | D．will have made |