Đáp án:

$\textbf{1.}$ You should have returned these books last week.

$→$ These books ${\color{red}{\textbf{should have been returned last week.}}}$

$\textbf{2.}$ Our teacher made us memorise hundreds of dates.

$→$ We ${\color{red}{\textbf{were made to memorise hundreds of dates by our teacher.}}}$

$\textbf{3.}$ After they caught him cheating, they sent Lewis home.

$→$ Having ${\color{red}{\textbf{been caught cheating}}}$, Lewis ${\color{red}{\textbf{was sent home.}}}$

Giải thích đáp án:

- Sử dụng cách biến đổi sang thể câu bị động.
Công thức: $$\color{teal}{\textbf{S + to-be +}\textbf{V}_{\text{past participle}}\textbf{+ (by + O)}}$$

- Sử dụng cấu trúc rút gọn mệnh đề trạng ngữ: 

Công thức: $$\color{teal}{\textbf{Having +}\textbf{V}_{\text{past participle}}\textbf{, clause.}}$$