将下列肯定句改为否定句。

1、You are at home now.                                            

2、He is going to visit the farm next Friday.                                                             

3、There was an old swing in the park last year.                                                                    

4、There were some knives in the basket.                                                          

5、The rabbits are next to the apple tree now.                                                                       

6、The boy in black likes music.                                                

7、We usually have four lessons in the morning.                                                                      

8、I will teach you English.                                       

9、Mr White lives and works in New York.                                                               

10、Her house is far from the school.                                                               

（）是指危害和整改难度较小，发现后能够立即整改排除的隐患。

A.一般事故隐患

B.较大事故隐患

C.重大事故隐患

D.特重大事故隐患