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3.    this ,that.it 的用法

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2.    numbers

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1.    be 动词的缩写

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15.  Is this/that an egg?Yes,it is./No,it isn’t.

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14.  How old are you?I’m twelve.

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13.  What class/grade/row are you in?

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12.  What’s … plus/and/minus….?

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11.  Welcome to China.

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10.  介绍用语 This is Lucy.  ---Who is that?--- This is Jack speaking.

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9.    --- Thank you. --- You’re welcome.

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