—Why did you arrive late?
—The fog _____ our air flight for about half an hour.
| A．held up | B．turned down | C．broke up | D．pulled down |
23. Speed of cars is measured ________kilometres per hour.
| A．on | B．in | C．by | D．to |
22. –Jinlin Hotel. Can I help you?
--Do you have a room ________ for this weekend?
| A．sensitive | B．present | C．available | D．Absent |
21. Mary was so ___ in aprreciating the beautiful view that she didn't realize the weather was____.
| A．absorbing, frozen | B．absorbing, freezing | C．absorbed, frozen | D．absorbed, freezing |
20. The teenagers wonder what ______makes Jay a successful pop singer.
| A．is it | B．is it that | C．it is | D．it is that |
19. Johnson ______ for 5 years for political reasons when he was young.
| A．was put in prison | B．was in the prison | C．out in prison | D．was in prison |