______ is a best-known secret in success that get ready in much of our life and you may make the most of the opportunity.
He devoted most of his time to his research, believing his hard work would___sooner or later.
China, a country with 145 million elderly people, will remain _______ ageing society during this century, according to _______ Chinese population experts.
— Shall we walk around the park or go for a bike ride? — _________. They are both good activities to me .
John plays football __________, if not better than, David.
______ comfortably in his armchair, the old man enjoyed the light music over the radio with his eyes half ______.