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小题1:Mrs. Chen’s teaching is well _________________ and clear.
小题2:Now we’re leaving the business district and ________________ the harbour.
小题3:It is becoming more and more difficult for farmers to make money from their farms. Many villages in western Europe are fighting to ___________________.
小题4:Steel is used in cars, and iron is used in electrical ____________________.
小题5:The Internet is the biggest source of ___________________ in the world..