The teacher picks up a __ of chalk from the chalk box.

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Theteacherpicksupa__ofchalkfromthechalkbox.Theteacherpicksupa__ofchalkfromthechalkbox.Theteacherpick

The teacher picks up a __ of chalk from the chalk box.
The teacher picks up a __ of chalk from the chalk box.

The teacher picks up a __ of chalk from the chalk box.
piece

老师选了一个__粉笔从粉笔盒。