| A．Yes, it isn’t. | B．No, it isn’t. |
| A．It’s an onion. | B．No, it isn’t. |
| A．Yes, it is. | B．It’s a potato. |
| A．It’s a cabbage. | B．Yes, it is. |
Mary has a big farm. There are many vegetables on the farm. They are tomatoes, cucumbers(黄瓜), potatoes, onions and carrots. At lunch time, Mary likes to eat some tomatoes and cucumbers. At dinner time, Mary likes to eat some potatoes.
1．Mary has a big farm. （| A．It’s a tomato. | B．No, it isn’t. |
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