_____ is known to us is that the 2012 Olympic Games will take place in London．

My sister Helen is not very ________. Her things are everywhere.

The study of nearly 10,000 people showedthat those who drank more than two cups of coffee or tea per day developed thedisease at half the rate of those who drank _________ than one cup each day.

Friendship____ love and understanding among people.[ ]

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