一道英语改错题！急！！速度！！谢谢了！！

Later in April ,a photo show was holding in our school .It was great success !All the photos were taken by the students themselves .There were both blacke-and-white and color photos ,presented our school life ,thd beauty of nature,festival activities and so on .All the work of arts were for show in the reading room on the second floor.Every day ,the large number of students went to enjoy it and they were surprised to find out that the pictures were too wonderful.Those their photos were chosen the best were

Later in April ,a photo show was holding(HOLDEN) in our school .It was (A)great success !All the photos were taken by the students themselves .There were both blacke-and-white and color photos ,presented(PRESENTTING) our school life ,thd beauty of nature,festival activities and so on .All the work of arts (works of art )were for show in the reading room on the second floor.Every day ,the(A) large number of students went to enjoy it (them)and they were surprised to find out that the pictures were too wonderful.Those their (whose)photos were chosen the best were

Later in April ,a photo show was holding(held) in our school .It was (a) great success !All the photos were taken by the students themselves .There were both black-and-white and color(ful) photos ,presented (presenting) our school (school's) life ,thd (the) beauty of nature, festival activities and so on .All the work of arts (All the works of art) were for (on) show in the reading room on the second floor. Every day ,the (a) large number of students went to enjoy it (them) and they were surprised to find out (out不要) that the pictures were too （so）wonderful.Those their photos were chosen (as) the best were

Later in April ,a photo show was holding (held)in our school .It was great success(successful) !All the photos were taken by the students themselves .There were both blacke-and-white and color photos ,presented(presenting) our school life ,thd beauty of nature,festival activities and so on .All the work of arts were (was) for show in the reading room on the second floor.Every day ,the(a) large number of students went to enjoy it and they were surprised to find out(x) that the pictures were too wonderful.Those their (x) photos were chosen the best were (x)