| A．You’re right. |
| B．You’re wrong. |
| C．Sit down , please. |
| A．You should write these words. |
| B．Can you write these words? |
| C．Are you writing these words? |
| A．What are they doing? |
| B．What is this boy doing? |
| C．What is she doing? |
| A．We’re watching to games. |
| B．I am playing football. |
| C．You are playing basketball. |
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