Đáp án: + Giải thích các bước giải:

Câu `1)`

`to` They was told this story by their grandmother when they visited her last week

`-` Có last week `to` QKĐ

`( + )` S + Ved/ Cột `2` + O

`-` Bị động QKĐ: S + Was/were + Ved/ Cột `3` + ( by O)

`color{pink}{#NA}` 

`color{red}{#Stark}`

`->` They was told this story by their grandmother when they visited her last week.

`+` Bị động QKĐ : `( + )` S + was / were + V`3`/ed + ( by O )

`+` DHNB : last week -> QKĐ 

`( + )` S + V`2`/ed + ...