You have to wear a helmet and a life jacket for protection, just ___ you fall into the water.
A. in case C. unless
C. though D. as
Since we ____ for almost two weeks, I’ll need to buy a large backpack in advance to carry my supplies of food and water.
A. have walked B. will be walking
C. have been walking D. walked
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
