2. My mother wrote a sick note for me. -> My mother didn`t write a sick note for me.
=> S + didn`t + V1 + O
3. My mother bought the dress yesterday.
=> Có yesterday: ngày hôm qua
4. She drank a lot of milk last night.
=> Có last night: tối trước
5. What is her height -> How tall is she?
=> What + tobe + sở hữu tính từ + height? = How tall + tobe + S?
6. I was at home last week. -> Were you at home last week?
=> Were/Was + S + N/adj +...?
7. Nha Trang/ stay/ did / long / How / you / in -> How long did you stay in Nha Trang?
=> Wh-word + did + S + V1 +...?