The moment we heard the news of the earthquake，we began to ______ the work to rescue those who were trapped in the building.
| A．set off | B．set down |
| C．set aside | D．set about |
— Thank you for seeing me off.
— _______.
| A．Glad to see you | B．Have a good journey |
| C．Don’t say so | D．See you later |
---Are you two old acquaintances?
---Yes, we _____ in the same neighborhood for quite a long time, though he went abroad with his family at 14.
| A．have lived | B．have been living | C．were living | D．lived |
Oh, look at you---you are trembling! You must feel cold now. In fact, you __________ in person. You can contact us by phone next time.
| A．didn’t need to come | B．needn’t come |
| C．needn’t have come | D．don’t need come |
Aluminum isn’t found free in nature, owing to its always ____ with other elements, most commonly with oxygen.
| A．being combined | B．having combined |
| C．combine | D．combined |
Being tall gives Yao Ming a(n) _______ over other basketball players.
| A．advantage | B．benefit | C．advance | D．profit |