where is my backpack 变复数

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• where's my backpack?
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• this is my my friend(变复数)
• She asked where I had been for my vacation.(变直接引语）
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• There is a hotel near my home变复数,变一般疑问
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• I am from China. 变复数 He likes music.变复数给部分单词提问：She goes to school by bus. 给by bus提问How ? she ? to school?My book is under the desk. 给under the desk提问 ？ ？ your desk?Mike comes from the U.K. 给the U.K.提问 ？ ？Mike ? from?I get uplat six o'clock . 给at six o'clock提问 ？ time ? you get up?
• 若一个圆锥的侧面积是18派,侧面展开图是半圆,则该圆锥的地面圆半径是多少?
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