| A．Look at the blackboard, Liu Tao. | B．Don’t listen to the teacher, Liu Tao. |
| C．Listen to me, Liu Tao. | |
| A．Open the window, please. | B．Open the door, please. | C．Close the window, please. |
| A．Stand up, please. | B．Open your books. | C．Sit down, please. |
| A．Peter has a big yellow robot. | B．Peter is a big yellow robot. | C．Peter has a big red robot. |
| A．OK, Miss Li. | B．I’m sorry, Miss Li. | C．All right. |
| A．Good morning, Miss Zhang. | B．I’m sorry, Miss Zhang. |
| A．not | B．please |
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