The man we followed suddenly stopped and looked as if _____ whether he was going the the right direction.
— Where will you start your work after graduation? — Mmm, it’s not been decided yet. I____ continue my study for a higher degree.
It is _____to spend a great deal of money on such meaningless and useless things.
____ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.
—I'm afraid I can’t do well in the job interview. Could you give me some advice? —______ Have confidence in yourself.
He ____enough time, otherwise he could have done it better.