| A．Stand up, please. | B．Open the door, please. | C．Sit down, please. |
| A．Look at the blackboard. | B．Look the blackboard. | C．See the blackboard. |
| A．Excuse me. | B．I’m sorry. | C．Thank you. |
| A．Open the window, please. | B．Open the door, please. |
| A．Close the book. | B．Open your books. |
| A．Come in, please. | B．I'm sorry. |
| A．Close the door | B．Open the window. | C．Open the door |
搜索
