Each year in the United States, many black teenagers _______ of school, either because they cannot keep up or they have to work to support their family.
A、gooutB
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The wealth of a country should be measured ________ the health and happiness of its people as well as the material goods it can produce.
Let'sdrink_______Dicks'successinbusiness.
When I came through the customs at the airport, I had to pay ________ on a clock I had bought.
Others argue that since the earth has endured a long string of ice ages in the last two millionto three million years, any warming is ________ to be temporary.
The problem ________ when the students refused to do their homework.
