emplty ` -> ` empty

Đáp án : The empty bottles were collected by the milkman

` -` Cấu trúc câu bị động thì `QKĐ `

` ( +  ) ` ; S + was / were + VPII + by + O

` ( - ) ` : S + wasn't / weren't + VPII + by + O

` ( ? ) `: Was / Were + S + VPII + by + O ?

`\text{ The empty bottles were collected by the milkman }`

vì:
Ta có:

`\text{ S + V(ed/2) + O + ... }`

`=` `\text{ O + was / were + V(PII) + .... ( by S ) }`

`-` Có " empty bottles : những chai rỗng" là số nhiều

`->` Ta dùng " were"

`-`  " collect" sang PII là " collected"

`\text{ Những chai rỗng được gom lại bởi người bán sữa }`

$#Nu$