7.(-) My parents don't live in the countryside.

(?) Do yor parents live in the countryside?

8. (-) Tom didn't give me any American stamps five days ago.

(?) Did you give you any American stamps five days ago?

9. (-) Mrs Oanh isn't our new literature teacher.

(?) Is Mrs Oanh your new literature teacher?

10. (-) There wasn't a toy store next to the museum.

(?) Was there a toy store next to the museum?

`7.` `(-)` My parents don't live in the countryside.

      `(?)` Do yor parents live in the countryside?

`8.` `(-)` Tom didn't give me any American stamps five days ago.

      `(?)` Did you give you any American stamps five days ago?

`9.` `(-)` Mrs Oanh isn't our new literature teacher.

      `(?)` Is Mrs Oanh your new literature teacher?

`10.` `(-)` There wasn't a toy store next to the museum.

        `(?)` Was there a toy store next to the museum?

________________________________________________________

`+` Cấu trúc thì Quá khứ đơn:

`(+)` S + Ved/V2

`(-)` S + didn't + V_inf

`(?)` Did + S + V_inf...?

`+` Thì Hiện tại đơn:

`(+)` S + Vs/es

`(-)` S + do/does + not + V_inf

`(?)` Does/Do + S + V_inf...?

`+` Cấu trúc thì Quá khứ đơn với tobe:

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

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

`(?)` Was/were + S + V_inf...?