| A．Open your mouth. |
| B．Open your books. |
| A．Don’t walk. | B．No bikes | C．No parking. |
| A．Don’t walk. | B．Don’t hit other children. | C．No smoking. |
| A．Don’t make noise. | B．No smoking. | C．Don’t walk. |
| A．No cameras. | B．Don’t touch. | C．Touch it. |
| A． Don’t touch. |
| B． Don’t swim. |
| C． No bikes. |
| A． Look left. |
| B． Look right. |
| C． Look up. |
| A． No bikes. |
| B． No swimming. |
| C． No cameras. |
| A．No swimming. |
| B．No parking. |
| C．No bikes. |
| A．Don’t make noise. |
| B．Don’t hit others. |
| C．Don’t climb the trees. |
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