| A．Where’s my pen? | B．Where’s my hat? |
| A．These are cows. | B．These are eggs. |
| A．Here you are. | B．Can I help you? |
| A．Do you have a watch? | B．Do you have some stamps? |
| A．Do you have a clock? | B．Do you have an umbrella? |
| A．Whose things are they? | B．They are my things. |
| A．How are you? | B．Were you five? |
| A．Is it a big city now? | B．Was it a big city then? |
| A．Are you at home? | B．Were you at home yesterday? |
| A．Is this a ruler? | B．Is this a rubber? |
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