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____treesmustbeplantedeveryyear. A.Thousandsof  B.Thous...

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____treesmustbeplantedeveryyear. A.Thousandsof  B.Thous...

____ trees must be planted every year.

  A. Thousands of   B. Thousand of   C. One thousand of   D. Thousands

【回答】

A

知識點:數詞

題型:選擇題