About________percentoftheearth'ssurfaceiscoveredwithwater
A、29you，me，please，could，help
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Thechildrenhavesomeapples.(改为单数句子)
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There__________acatandtwodogsinmyhome
to，I，put，the，ball，in，the，box，want
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Theseare______.Youcanbuyapairforyourmother.
