_____ interesting the film is, I won’t waste any time on it. 

 In the global economy, a new drug for cancer,           it is discovered, will create many economic possibilities around the world.

_______ I see the photo,1 will always think of Mr Li, who once was very strict with us.

This hotel is the highest building in the city, from ______ top you can enjoy a good view of our city.

It was not until 1920      regular radio broadcast began.