_______ you sit in front of the computer all day while working, you’d better take exercise for at least an hour every day.
You shouldn’t have failed the job interview. Why didn’t you do ___ the expert suggested?
They will fly to Washington, ______ they plan to stay for two or three days.
It isn’t quite ___ whether the Tibetan antelope is still being hunted.
---Where’s the little elephant? ---It’s said it ___ in the hospital.
She wondered what use she would _______ this chance.