a) David :"Catherine, I'm unable to read your writing.
b) => David told Catherine that..he was unable to read her writing........( giải thích vì sao làm vậy)
a) My wish is to become a young inventor.
b) => Son told us...his wish was to become a young inventor .... ( giải thích vì sao làm vậy)
- Áp dụng cấu trúc câu gián tiếp là làm thôi bạn. ;)