将下列句子变成相对应的语态。

1. Farmers grow rice in the field.

                     by farmers in the field.

2. This sad novel was written by Charles Dickens.  

Charles Dickens         this sad novel.      

3. The exciting movie was directed by Zhang Yi-mou.    

Zhang Yimou          the exciting movie.

4. Yesterday he cut the old tree.  

The old tree                  by him yesterday.

5. My parents ask me to watch only the TV news.  

                          to watch only the TV news.

井上下敷设的瓦斯管路，不得与带电物体接触并应有防止砸坏管路的措施。