1 . 写出下列句中黑体部分在句中所作的成分
(1)The exchange students are celebrating the Christmas.    1    
(2)My duty is to make our environment better.    2    
(3)The children are swimming in the swimming pool.    3    
(4)I was glad to see the child well taken care of.    4    
(5)The building designed by her is beautiful.    5    
(6)A lot of green lands have been opened to the public.    6    
(7)Scientists are carrying out experiments to test the effectiveness of the new medicine.    7    
(8)The manager made them work day and night.    8