Sam ______ some knowledge of the computer just by watching others working on it.
| A．brought up | B．looked up | C．picked up | D．set up |
Of all the books on the desk, _____is of any use for our study.
| A．no one | B．nothing | C．none | D．neither |
As simple and convenient way to get Latest fashions online, online shopping also has major problem—you can’t see whether they fit or not.
| A．the;the | B．不填；the | C．the;a | D．不填；不填 |
He may win the first prize in the national competition, _______ he is likely to be admitted to Peking University.
| A．in which case | B．in that case | C．in what case | D．in whose case |
I had just about given myself up for lost _________ I was spotted by a ship.
| A．when | B．while | C．as | D．until |
If you have a job, ______ yourself to it and finally you will succeed.
| A．do devote | B．don’t devote | C．be devoting | D．to devote |