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
--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
