根据所给要求写出下列单词的正确形式。

1. answer (复数)                              2. today (对应词)                        

3. have (过去式)                              4. store (同义词)                         

5. arrive (现在分词)                         6. ask (反义词)                            

7. eye (同音词)                                8. went (动词原形)                      

9. by (同音词)                                 10. big (反义词)