--- Smoking and drunkenness (酗酒) are both bad for people' s health.
--- Yes, So we should __ cigarettes and alcohol (酒精) .
| A．slow down | B．put up | C．stay away from | D．give out |
With the help of the smart phones, you ____ video chat with your friends on the phone.
| A．can | B．must |
| C．need | D．should |
— Sam, you don’t work hard at geography.
— My dad says that the world is changing every day, I decide to wait until it stops.
| A．because | B．while |
| C．if | D．so |
— How much of his speech do you think you have understood?
— . I wish I had worked harder.
| A．Quite a few | B．Very few |
| C．Next to nothing | D．Quite a lot |
Not everyone knew about the Hong Kong singer Deng Ziqi, some even thought she was nobody, but she____________ to be a great singer and won a lot of fans.
| A．turned on | B． turned off |
| C．turned to | D．turned out |
I listened to Professor Chen-Ning Franklin Yang’s lecture about his study and physics, but I failed to get its key ______ .
| A．words | B．notes |
| C．messages | D．points |