`Answer:`

`1.` weren't - were

`2.` was - wasn't 

`3.` Was

`4.` were

`5.` wasn't 

`6.` was

`7.` Was - wasn't

`8.` were - were

`9.` were - weren't

`10.` Was - She was

`->` Cấu trúc thì Quá khứ đơn:

`-` với tobe: 

`(+)` S + was/were ...

`(-)` S + was/were + not

`(?)` Was/Were + S..?

`+` Chủ ngữ: They/ we/ you/ N(Số nhiều) `->` dùng tobe "were"

`+` Chủ ngữ: I/ It/ she/ he/ N(Số ít) `->` dùng tobe "was"

$\text{1. }$weren't/were

$\text{2. }$was/wasn't

$\text{3. }$Was....?

$\text{4. }$were

$\text{5. }$wasn't

$\text{6. }$was

$\text{7. }$Was/ wasn't

$\text{8. }$were/ were

$\text{9. }$were/ weren't

$\text{10. }$Was/ she was

- Cấu trúc quá khứ đơn:

+ TOBE: 

(+)  I/He/ she/it/ Danh từ số ít+ was+...

      We/ you/ they/ Danh từ số nhiều+were+...

(-)   I/He/ she/it/ Danh từ số ít+ wasn't+...

      We/ you/ they/ Danh từ số nhiều+weren't+...

(?)  Was+ I/he/ she/it/ Danh từ số ít+...?

      Were+ we/ you/ they/ Danh từ số nhiều+...?

$\textit{# Themoonstarhk}$