They are still very cautious about ______ side effect the new medicine will bring about, although the experts have tried it on about 2,000 patients.
Have you ________ the time of the flight?
You need a password to get ________ to the computer system.
Don't ________ your eyes by reading in a bad light.
He was passionately addicted to ________ to pop music.
Don't ________ your troubles too often.