_______ blood if you can and many lives will be saved.
| A．Giving | B．Give | C．Given | D．To give |
Only through _______ talks can we build trust and only through cooperation can we create _______ win-win economic situation.
| A．/, a | B．the, the | C．/, the | D．the, a |
Most whales must come up for air after several minutes, _______ a few can stay under water for an hour or more.
| A．while | B．or | C．for | D．so |
—I wonder whom you are waiting for.
—The policeman _______ the traffic accident.
| A．dealt with | B．to deal with |
| C．will deal with | D．to be dealt with |
Jobs are hard to get and, _______, more young people are continuing their education.
| A．above all | B．as a result | C．on the contrary | D．after all |
—Tony, come down and help me with the heavy box!
— Come on! I _______ all day long．Get Peter to do that!
| A．work | B．had been working |
| C．had worked | D．have been working |