7. In Beijing Olympics, Michael Phelps swam into Olympic history, ______ the first athlete to win the most gold medals ever.
In ______ review of 44 studies, American researchers found that men and women who ate six key foods daily cut the risk of ______heart disease by 76%.
Lisa, could you tell me ________ yesterday?
More and more foreign friends enjoy ________to Peking Opera.
He doesn’t do his homework______ , though he has ____.
We had a party _______ having class last Friday