--Aren’t we living a happy life? --You should not be content with what you have. _______, you must be better in every aspect of your life.
We_______on this project for four hours. Let’s have a rest.
Many people believe we are heading for environmental disaster _____ we basically change the way we live.
She longed for a pleasant trip in the summer, while her parents desired that she_______ at home, preparing for the coming exam..
Jack has made great achievements in his work, and the harder he works, the more _________ he becomes.
This depends uponhe is interested in doing this kind of work.