Mary and I see each other ____, but not as often as we used to.
Long,long time ago,there was a mountain.At the top of the mountain _______,in which an old monk used to tell stories.
I failed in the final examination last term and only then _______ the importance of studies.
Only by practising a few hours every day _______ be able to master the language.
_______ the people have become masters of their country _______ science can really serve the people.
—I would never come to this restaurant again.The food is terrible! —_______.