— You keep on coughing. What's the matter? — Oh, I've got a cold. Nothing serious, ____.
Expo 2010 Shanghai China offered wonderful opportunity for cross culture dialogues.
Only by working hard your dream of becoming a doctor.
It was because of the bad weather _______ the football match had to be put off.
Tom always prefers _________ rather than _______ a bike.
The doctor insisted that I _________ more fruit and vegetables.