--- ?
---He is eating a hamburger.
| A．How is Dan |
| B．What is Dan doing |
| C．When does Dan eat a hamburger |
| D．Why does Dan eat a hamburger |
--- ?
---He is eating a hamburger.
| A．How is Dan |
| B．What is Dan doing |
| C．When does Dan eat a hamburger |
| D．Why does Dan eat a hamburger |
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