下列句子中均有一处错误,请指出并改正.

1。The Sam are going to Beijing together with my family。误：Sam 正：Sams2。The young should make rooms for the old in crowded buses。误：rooms 正：room3。We study quite a few subject,such as Chinese ,maths and English。误：subject 正：subjects4。This book isn't his。It belongs to Kate's。误：Kate's 正：Kate5。Few man workers are still demanding a rise in their pay。误：man 正：men6。Han Mei's and Mary's English teacher is a girl from Hongkong。误：Han Mei's 正：Han Mei7。Both my father and my brother are police。误：police 正：policemen8。There are two deers in the kinderfarten。误：deers 正：deer9。Help yourself to some fishes,please。误：fishes 正：fish10。English is spoken as the first language i Canadian。误：i Canadian 正：in Canada