Our new machines are much cheaper to run．
| A．effective | B．efficient |
| C．energetic | D．Enthusiastic |
“Don’t worry. We will the case as soon as possible.” the police officer said to the young lady.
| A．look after | B．look into |
| C．look out | D．look up |
She didn’t have the ________ to walk any further, because she had walked for a long distance.
| A．energy | B．power | C．strength | D．support |
He was educated at the local high school, ________he went on to Beijing University.
| A．after which | B．after that |
| C．in which | D．in that |
The little child didn’t understand thequestion so there was a expression on his face.
| A．puzzling; puzzled | B．puzzled; puzzled |
| C．puzzling; puzzling | D．puzzled; puzzling |
He will be in charge of the company, for he has rich experience in business.
| A．the ; 不填 | B．不填；不填 |
| C．the ; a | D．不填 ; a |