$\color{black}{14}$

→ That book was  bought by Tom yesterday

$\color{black}{-}$  S + Was/Were + V3/Ved + ( By + O ) +....

$\color{black}{15}$

→ The little boy was badly treated by the old man

$\color{black}{16}$

→ Ann wasn't offered the job .

$\color{black}{-}$ S + Wasn't/Weren't + V3/Ved +...

$\color{black}{17}$

→ $\color{black}{C}$

$\color{black}{-}$ S + Have/Has Been + V3/Ved + ( By + O ) +...

$\color{black}{14}$

→ That book was  bought by Tom yesterday

$\color{black}{+)}$ Bị động quá khứ : S + Was/Were + V3/Ved + By + O +...

$\color{black}{15}$

→ The little boy was badly treated by the old man

$\color{black}{16}$

→ Ann wasn't offered the job .

$\color{black}{17}$

→ $\color{black}{C}$

→ Bị động HTHT :  S + Have/Has been + V3/Ved + By + O +...