overthere(汉语意思)__________
—Where_____you_____?
—I'mfromBeijing
she_______(宾格)
Ithinkthe______(four)lessonisthemostdifficultinthisbook.
Theboysaresittingunderthetree.(对划线部分提问)
___________________________________________
About________percentoftheearth'ssurfaceiscoveredwithwater
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