按要求改寫句子。     
1．小嘎子摔了個仰面朝天。     
改為“被”字句：                                                                                          
2．你莫不是還有兩個親人不曾見面？ 
 改為陳述句：                                                                                                  
3．天下有這樣標致的人物。  
改為反問句：                                                                                                   
 4．嚴監(jiān)生是一個很有錢的人。 
改為雙重否定句：