Below ____ an article about advertisements ____ by a student for her English project.
A. are; writing B. be; to be written
C. being; written D. is; written
_____ an ad does not lie, it does not mean it is altogether innocent.
A. Even if B. As if
C. If D. Now that
She set off at 9 a.m. and ____ the airport an hour later.
A. will reach B. would reach
C. had reached D. reached
If ____ in, viruses can result in illness or even death.
A. breathe B. breathing
C. breathed D. to breathe
By the 1920s, Howard Carter ____ an explorer.
A. has become B. had become
C. became D. would become
Three mountains, Meili, Baimang and Haba, _____ are covered with snow, tower over the land.
A. that B. what
C. which D. as
