| A．Where is the door? |
| B．Open the door. |
| C．Let me clean the door. |
| A．Let me clean the classroom. |
| B．Let me clean the blackboard. |
| C．The classroom is big. |
| A．It’s near the picture. |
| B．The picture is nice. |
| C．Put up the picture. |
| A．Turn off the light. |
| B．Turn on the light. |
| C．Where is the light? |
| A．Let me clean the window. |
| B．Let me clean the blackboard. |
| C．What’s on the blackboard? |
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