It is human nature to think back to a golden age ______ one’s country was strong and respected.

I made a promise to myself _____ this year, my first year in high school, would be different.

 The husband rushed to the hospital ____he heard that his wife was injured .

 　　　　, you should keep it a secret; or you will ruin our plan.

I have worked with children, so I know _____ to expect in my job.