Professor Zhang, accompanied by his students, ___________ in the lab.
| A．do the experiment |
| B．doing the experiment |
| C．were doing the experiment |
| D．was doing the experiment |
She_____ Japanese when she went to Japan for holiday. Now she can speak it freely.
| A．picked up | B．turned up | C．made up | D．took up |
People are not allowed ______freely at the meeting and they don’t allow ______either.
| A．talking; to smoke | B．to talk; to smoke |
| C．talking; smoking | D．to talk; smoking |
Traditional works of art from different provinces ______at the culture show of the 2010 Shanghai World Expo.
| A．are displaying | B．is displaying |
| C．are being displayed | D．is being displayed |
一Professor Li, ______the student start at once or wait a while?
一At once.
| A．will | B．shall | C．can | D．may |
Those who are not active or______ diet is high in fat will put on weight quickly.
| A．what | B．that | C．which | D．whose |