| A．Open | B．open | C．close |
( )| A．—What colour is it? —It's white. | B．—What colour is it? —It's yellow. |
( )| A．Open the book. | B．Close the book. |
Zz 
( )| A．This is a chair. | B．This is a desk. |
( )| A．Open the door. | B．Close the door. |
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