We are anxious about the spreading of H7N9, hoping it’ll ______ less threatening soon.
It was not until dark _______ he found _______ he thought was the correct way to solve the problem.
They lost their way in the forest, and _______ made matters worse was that night began to fall.
They are teachers and don’t realize _______ to start and run a company.
The thought _______ he would open a Sichuan restaurant in Los Angeles surprised his wife.
Air, or _______ is called the atmosphere, surrounds the whole world.