He is the only one of the students who ______a winner of a scholarship for three years.
| A．is | B．are | C．have been | D．has been |
China isn't the country _________ she used to be 50 years ago.
| A．that | B．which | C．what | D．since |
Do you have anything is important to tell me?
| A．which | B．that | C．/ | D．it |
20 . They have made_______a rule________in the room.
| A． this; not to smoke | B． it; smoking |
| C． it; to not smoke | D． it; not to smoke |
19. I wondered_____that made him so upset.
| A． how it was | B． which did it | C． what it was | D． who did it |
18. The stories of rescuing trapped strangers in the earthquake highlight the huge efforts_______by Haitians themselves, as well as aid workers from around the world.
| A． to be made | B． being made | C． having made | D． to have made |