Those successful deaf dancers think that dancing is an activity ___ ___ sight matters more than hearing.
So suddenly __________ that people had no time to escape.
I happened __________ with him when he was hit by a stone.
You'd better not phone me between two and six o'clock this afternoon; I __________ a speech then.
By the middle of the 21st century, the vast majority of the world's population __________ in cities rather than in the country.
-I will call on you at 9:00 tomorrow morning.-Sorry, I __________ the flight to Sanya then.