下線部を代名詞にEmi is good at soccer.
答She is good at soccer.
主格（Emi → she）
下線部を代名詞にMr. Sato is very kind to us.
答He is very kind to us.
主格（Mr. Sato → he）
下線部を代名詞にMs. Green is busy every day.
答She is busy every day.
主格（Ms. Green → she）
下線部を代名詞にDo you know Tom and Ken?
答Do you know them?
目的格（Tom and Ken → them）
下線部を代名詞にEveryone likes my sister.
答Everyone likes her.
目的格（my sister → her）
下線部を代名詞にI play tennis with my parents.
答I play tennis with them.
目的格（my parents → them）
下線部を代名詞にI like Yuki's bag very much.
答I like her bag very much.
所有格（Yuki's → her）
下線部を代名詞にMy brother's house is near my school.
答His house is near my school.
所有格（my brother's → his）
下線部を代名詞にThat bag is Kate and Emi's.
答That bag is theirs.
所有代名詞（Kate and Emi's → theirs）
下線部を代名詞にThese books are Mr. Brown's.
答These books are his.
所有代名詞（Mr. Brown's → his）