`11.` His friend asked him how he went to the airport.

`-` Lùi thì: HTĐ `->` QKĐ

`-` Đổi ngôi: you `->` he

`12.` I asked Minh whose car he had borrowed the night before.

`-` Lùi thì: QKĐ `->` QKHT

`-` Đổi ngôi: you `->` he

`-` Trạng từ: last night `->` the night before

`13.` The teacher asked me where my father worked.

`-` Lùi thì: HTĐ `->` QKĐ

`-` Đổi ngôi: your `->` my

`14.` Tam's friend asked him how long he would stay in England.

`-` Lùi thì: will `->` would

`-` Đổi ngôi: you `->` he

`15.` My doctor asked me what I had done to cope with my work stress.

`-` Lùi thì: HTHT `->` QKHT

`-` Đổi ngôi: you `->` I, your `->` my

`16.` He asked me how many lessons I was going to learn the next/following month.

`-` Lùi thì: HTTD `->` QKTD

`-` Đổi ngôi: you `->` I

`-` Trạng từ: next month `->` the next/following month

`----------`

`***` Câu tường thuật với 5W1H ques-:

S + asked sb/wondered/wanted to know + 5W1H + S + V (lùi thì)