As Polly observed the passengers on the train, she _______that she was being watched by a tall man in a dark coat.
Nobody wants to___________ especially in public.
— Was Li Lei sorry for what he’d done to his parents? — ______! It was just like him!
He failed in his business a third time and only then ______ the difficult situation he was in.
The local government must take measures to bring the problem of water pollution _________ the attention ________ the public.
They are ________ for new skills so that they can be qualified for the new jobs.