I just keep working hard as I have done, and ________ it will pay off. It has done so far and so I just have to do the same.

 People say that young Chinese students’ eyesight keeps dropping _________ because of both too much homework and poor learning conditions.

As the idea of low-carbon life is now _____ accepted, more and more people travel by public transport.

There was a big fire in the building last night. ____, all the people were able to escape.

The house, which is large and is surrounded by trees and flowers, is       what she longs for ．