Mary was caught in a traffic jam and by the time she arrived at the airport her father’s plane_______.
| A．took off |
| B．had already taken off |
| C．was take off |
| D．had already been taken off |
The stars are so hot that they___great light and heat---more than the hottest,brightest fire you can imagine
| A．give back |
| B．give up |
| C．give in |
| D．give off |
The management of computer network is really beyond my___,but I can get useful information from it
| A．grasp |
| B．catch |
| C．snatch |
| D．grab |
Listeners are often advised to___what the speaker is going to deliver in his speech as a whole rather than a point or two in it
| A．seize |
| B．snatch |
| C．grasp |
| D．master |
A new___bus service of Tianjin Airport started to operate two months ago
| A．normal |
| B．usual |
| C．regular |
| D．common |
John was late for the business meeting because his flight had been___by a heavy storm
| A．kept |
| B．stopped |
| C．slowed |
| D．delayed |