题文
They are in ____ but in ____.
| A．same grade; different classes |
| B．the same grade; different classes |
| C．same grades; different class |
| D．the same grades; different class |
They are in ____ but in ____.
| A．same grade; different classes |
| B．the same grade; different classes |
| C．same grades; different class |
| D．the same grades; different class |
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