She always has a smile ________ her face .
| A．in | B．on | C．at | D．in front of |
Do I have to save all the information?
A. check B. store C. receive
------This is really a difficult problem.
------Yes, that’s true, but she managed to solve it.
A. failed to solve
B. liked to solve
C. succeeded in solving
When you ________, you start a journey.
A. set off B. put off C. get off
The dish smells ______ but tastes________.
A. good; bad B. well; nice C. nice; good
—Don’t leave your computer_____ if you don’t use it. Electricity is valuable.
— Sorry, I won’t.
A. on B. out C. off