Millions of people around the world suffer from a painful addiction to biting their nails，which can be harder________than smoking cigarettes．
A．to be quittedB．to quit
C．to have quittedD．to quitting
_______most kids still love burgers，chicken wings and pizza，there are a lots of other foods that are to kids' taste．
A．WhileB．Since
C．BeforeD．In case
Ancient China was a country________culture influenced other countries in Asia for centuries．
A．whoB．whichC．whoseD．Where
一Julia，you look upset．What's up？
—The computer_______break down at this busy hour．I have lots of typing to do．
A．shouldB．canC．mayD．must
As the job-hunting season is on the way，many graduates______from anxiety．
A．will be sufferedB．are suffering
C．were sufferingD．are being suffered
I am sorry he has not told me his name on the phone because_______helps if I know who I am talking to．
A．itB．heC．oneD．its
