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________ that I was puzzled.

The USA is a large country in ________ many different dialects are spoken.

It was my sister ________ first had the idea to cycle along the entire Mekong River.

___       is well known is that Africa had contacts with India and the Red Sea civilizations from the earliest times．

Depression is the leading cause of suicide, __    __ in turn is the third leading cause of death among 15 to 24 year olds in the United States．

Jenny was sad over the loss of the photos she shot in Canada, _________ this was a memory she especially treasured.

He was educated at the local high school, ______ he went on to Beijing University.

People who have regular physical exercise seldom catch a disease like H1N1 Flu, ______?

This is one of the best films ______ this year.                                  

______ is no doubt that the media play a major role in influencing people’s opinions.