-What do you know about Vancouver?-It's host city of the 2010 Winter Olympic Games, and it is also ____ home to North America's second biggest Chinatown.
It was not until midnight____ they reached the camp site.
-----Are you pleased with the play? ------Not at all. It couldn’t have been___.
----Did Jack come back early last night? ------Yes. It was not yet eight o’clock____ he arrived home.
Almost every country is increasing the price of cigarettes____ reduce smoking.
____many times, he still didn’t understand it.