| A．catching | B．playing |
| A．house | B．playground |
| A．Can | B．Are | C．is | D．are | E．am |
| A．What are you doing? | B．What’s she doing? |
| A．Can I play with you? | B．Can I play with them? |
| A．They’re playing on the playground |
| B．They’re playing in the school. |
| A．Boys and girls are running. |
| B．Boys are catching girls. |
| A．What are the kids doing? |
| B．What are the kids playing? |
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