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? |