The limits of a person's intelligence,generally speaking,are fixed at birth,but ________ he reaches these limits will depend on his environment.(2011·安徽)
The students ___ busily when Miss Brown went to get a book she ___ in the office.
—You’re going to have a rise this month, aren’t you? —Yes, only $ 100. — Well, _______.
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.