{"parts":[["choose","Choose the correct answer.",0,"","",[["Which sentence uses the possessive case correctly?",["The cat's toy is under the table.","The cats toy is under the table.","The cat toy is under the table."],0],["Which is the correct possessive form of \"the book of John\":",["John's book","Johns\u2019 book","Johns book"],1],["Which is the correct possessive form of \"the shoes of the children\"?",["The children's shoes","The childrens' shoes","The childrens shoes"],2]]]],"corr":[[1],[1],[1]],"exp":["","",""]}
10
