Đáp án:
`11.` He told her she was his friend.
`-` Câu tường thuật `:` S + said / said to sb / told sb + S + V (lùi thì) + O.
`-` You `->` She
`-` My `->` His
`-` HTĐ `->` QKĐ
`12.` John told his mother he didn't know how to do that exercise.
`-` Câu tường thuật `:` S + said / said to sb / told sb + S + V (lùi thì) + O.
`-` I `->` He
`-` This `->` That
`-` HTĐ `->` QKĐ
`13.` The students asked their teacher to give them better marks.
`-` Câu tường thuật `:` S + asked sb + wondered / wanted to know + to do sth.
`-` Us `->` Them
`14.` She asked me to pull as hard as I could.
`-` Câu tường thuật `:` S + asked sb + wondered / wanted to know + to do sth.
`-` Can `->` Could
`15.` Mr. Smith asked me not to forget to send my parents her regards.
`-` Câu tường thuật `:` S + asked sb + wondered / wanted to know + to do sth.
`-` Your `->` My
`-` My `->` Her