| A．Red is stop. |
| B．Yellow is wait. |
| C．Yellow is go. |
| A． Goodbye. | B． Good afternoon. |
| A． My aunt is a doctor. | B． Is your aunt a doctor? |
| A． Who is she? | B． What does he do? |
| A． My mother is a nurse. | B． My mother is a doctor. |
| A．My aunt is a doctor. | B．Is your aunt a doctor? |
| A．Who is she? | B．What does he do? |
| A．Goodbye. | B．Good afternoon. |
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