In some languages,100 words make up half of all words ________ in daily conversations.
| A．using | B．to use |
| C．having used | D．used |
_______ an important role in a new movie, Andy has got a chance to become famous.
| A．Offer | B．Offered | C．Offering | D．To offer |
As he reached ______ front door, Jack saw ______ strange sight.
| A．the, / | B．a, the | C．/, a | D．the, a |
Much of the power of the trade unions has been lost.______, their political influence should very great..
| A．As a result | B．As usual | C．Even so | D．So far |
Stephen tried to get his wok______ in the medical circle.
| A．to recognize | B．recognizing | C．recognize | D．recognized |
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 |