As long as the whole of our society _____ trying, we will make our skies blue again. ( )
A.keepsB.will keepC.kept
It’s important for us ________ hard in order to have a better life.
work
to work
working
— ________ have you been a member of the Helpers’ Club?
— For two years.
How soon
How long
How often
—May I ________ your pen? I can’t find mine.
—Sure. Here you are.
repair
make
borrow
—Betty, you’d better follow the doctor’s ________ and do more exercise.
—I will. Thank you.
advice
agreement
information
Please ________ the lights when you leave the room. Be a greener person.
turn off
turn on
turn up