句型转换。

1. The manatees are about 10 feet long and they weigh about l,0000 pounds. (对画线部分提问)   

                _  _______ the manatees _______?

12.A manatee eats about 100 pounds of food a day. (对划线部分提问)  

                    _______ food does a manatee eat a day?

13. Diana is an inspiration to us all. (改为同义句)    

      Diana _______ all  _______ us．

14. Zoos are terrible places for animals to live. (改为同义句)    

      Zoos are                ________ places for animals to live.

15. They are trying to help the environment. (对画线部分提问)    

                   are they trying               _ _________?