按要求改写句子。

1．母亲温柔地把我叫到桌前。

    “被”字句：                                                                                         

2．老乡家的房子被洪水冲垮了。

    “把”字句：                                                                                         

3．李爽惭愧地低下了头。

     疑问句：                                                                                               

     反问句：                                                                                              

库房、保险柜必须装备（）把锁。

A.1

B.2

C.3

D.4