This machine is very easy ________ . Anybody can learn to use it in a few minutes.
A. operating(操作) B. to be operating
C. operated D. to operate
The game is not very difficult _______ you understand the rules.
A. until B. though
C. once D. unless
Even though the workers were not satisfied, they _______ to the boss finally.
A. gave up B. gave in
C. gave out D. gave away
I prefer studying English at home ______ the football match live on the Internet.
A. to watching B. to watch
C. rather than watch D. rather than watching
If she doesn't want to go，nothing you can say will ______ her.
A. persuade B. promise C. invite D. support
The number of people invited ________ fifty, but a number of them ______ absent for different reasons.
A. were; was B. was; were
C. was; was D. were; were
