问题 填空题

按规律填数字,写阿拉伯数字即可。

1. one, two, three, four,        

2. one, three, five, seven,        

3. one, two, four, five, seven,        

4. ten, nine, eight,      

答案

1. five或5  2. nine或9  3. eight或8   4. seven或7

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