Helping others 1              (be) a good thing，because we can get some enjoyment out of it.So I 2               (firm) believe that participating in a volunteering activity can benefit us a lot.
Firstly，we can get a lot of life experience and gain 3                    (skill) to help those in need.Secondly，we would make
more friends and learn much knowledge.Then we can get well 4                  (prepare) for our future.Thirdly，we may gain a special skill 5                    can help us live better in 6                 (challenge) conditions.And lastly，taking such 7                 
activity means letting everyone in the world feel the existence of love and 8                 (warm)．Maybe we will know more about 9                  the happiness is.
So，try to become a volunteer and do our best to help others.I believe we can know more about ourselves and our 10    
   (wonder) future.
 
 
1【答案】1．is　2．firmly　3．skills　4．prepared　5．that/which　
6．challenging　7．an　8．warmth　9．what　10．wonderful