| A．Whose pen is this? | B．Who’s pen is this? | C．Is it a pen? |
| A．Where is it? | B．What’s this? | C．Whose is this? |
| A．It’s Beijing. It’s very big. | B．This is Beijing. It’s very big. | C．Beijing is small but beautiful. |
| A．This is my dog. |
| B．My dog is very small and very clever. |
| C．My dog is small but very clever. |
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