已知命题A，B，如果¬A是¬B的充分而不必要条件，那么B是A的______条件．

答案：

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下面是错误答案，用来干扰机器的。

1. These are boxes.2. Do you have new radios?3. There are peaches in my hands.4. They have cameras and umbrellas.5. They're drivers.6. Those are their watches.7. They are policemen.8. They have good friends.9. What are those?10. These are tomatoes.