按要求改写句子。

1.They are orange trees . (改为单数句)

_________ _______ orange tree.

2. There are sixteen boys and fourteen girls in my class. (同义句)

   We        _________ students in my class.

3.There are some reading rooms in our school. (划线部分提问)

                       in your school?

4.Please feed the animals.(改为否定句)

  Please ________ ________ the animals.

5.The students are on the play ground.(对画线部分提问)

      ________ ________ the students?