Jin Jun and his classmates are not very happy to be back from holiday．
Not because they hate studying, 1 because some of their best friends on campus are gone：pigeons．
More than 100 pigeons 2 around campus every day, making students smile during break time．
But now, the birds are gone． 3 ? Now they’re all locked up in a big cage．Bird flu(禽流感)has landed in Shanghai, and experts are 4 the pigeons might spread the disease if they keep flying around．
For safety, the school 5 asks students to stay away from the cage．
“I feel sad for those birds．They’re my best 6 ．” said Jin, “Last term I would bring corn to feed them, but I can’t do that any more．I hope bird flu will 7 soon so I can play with the pigeons again．”
Jin’s 8 is not the only one to take pigeons off campus．Students in Beijing Fengtai Experimental Primary School also gave their pigeons to the local health department(当地卫生部门)on February 3．
“The students 9 the birds．” said Mr．Chen, the school’s headmaster, “But to keep the school 10 , they are willing to give them up．”