.I was about to leave for work ______the telephone rang.

Now let me tell you the work I have been doing with them. My job with the UN is not paid, but voluntary and as I said _______, I mainly visit countries where the UN has programs to help people. 

There is a popular opinion among teachers _____ reviewing the lesson after class can help students learn better.

It was during World War II, ____ he was in his early twenties, _____ he joined the British Army.

She is such a crazy soccer fan      she downloaded every match in the World Cup 2010 from the Internet.

I’ll give you a phone call        to Paris.

_____ you have a healthy diet, you can reduce its benefits by bad eating habits．

______ some teenagers don’t realize is _______ difficult life can be after they get addicted to drugs．

This photo of mine was taken ____ stood the famous tower．

He raised a suggestion at the meeting, ____ well worth considering.