Ladies and gentlemen，please return to your seat and fasten your safety belt. Our plane_________.
| A．takes off | B．is taking off |
| C．has taken off | D．will be taking off |
From the top of the tower, people can see at least ________ distance of 10 kilometers on ________ clear day.
| A．a; the | B．不填； a | C．a; a | D．the; the |
A number of high buildings have arisen ______ there was nothing a year ago but ruins.
| A．where | B．when | C．before | D．until |
I’d like to go to Tommy’s birthday party this evening, but I _____ just _____ from the flu.
| A．am---recovering | B．will--- recover |
| C．was--- recovering | D．had --- recovered |
With the fast development of agriculture, the people, ______ village she taught ten years ago, have lived a happy life.
| A．who | B．in whose | C．whose | D．in which |
Marry _____ as a secretary in this company for twenty years and now she stays at home taking care of her own garden.
| A．has served | B．had served | C．has been served | D．served |