Mr. Lee is ______ to show up at the meeting.
They will start their project ____at helping the poor children to be educated in China's west.
Could it be in the restaurant in ___ you had dinner with me yesterday ___ you lost your handbag.
By now, when one makes a large purchase, he should have ___ opportunity to change his mind.
It is a long time ___
Sam _______some knowledge of the computer just by watching others working on it.