Tom and I ________ students.

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Is this your ruler? No, ________.

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This is ________“s”.

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Here's ________ exercise book.

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－Xiao Wang! What's this in English?

－A computer.

－Can you spell ________, please?

－Sure. C－O－M－P－U－T－E－R.

－Thank you.

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－What's this? －________ a cap.

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A．Its　　B．This is　　C．It's

－What ________ your name?

－My name is Lilei.

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It is the hardest time we have ever had. During that time, we ate almost anything________.

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Many boys are very naughty,________ , Nick is one of them.

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When shall I phone you, morning or afternoon？

________I'll be in all day.

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