题目内容：

用动词的适当形式填空。

1.He would like to be a social worker when he_______ (grow) up.

2.The Eiffel Tower is_______ (make) of metal.

3.He needs_______ (meet) his close friend.

4.They_______ (plan) to go to see the final, but they didn't.

5.We are writing to you about_______ (protect) wild animals.