His parents were worried that he too much time chatting on line.
| A．spent | B．cost | C．paid | D．had |
— 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 |
--Excuse me, teacher, can I ask you something about the last class? I didn’t quite understand it.
--Sure! Please feel _________to ask me anything!
| A．fine | B．free |
| C．OK | D．right |