$\begin{array}{c} \color{#db1616}{\texttt{#Farewell}} \end{array}$

`1` 

`(-)` Children didn't plant more trees .

`(?)` Did children plant more trees `?`

`2` 

`(-)` Tom wasn't the member of Youth Club .

`(?)` Was Tom the member of Youth Club `?`

`3` 

`(-)` The school wasn't close due to the snow .

`(?)` Was the school due to the snow `?`

`4` 

`(-)` The organisation didn't provide shelter for the children .

`(?)` Did the organisation provide shelter for the children `?`

`5` 

`(-)` They weren't at school this morning .

`(?)` Were they at school this morning `?`

`6` 

`(-)` Tom didn't go to the hospital to provide food two weeks ago .

`(?)` Did Tom go to the hospital to provide food two weeks ago `?`

`7` 

`(-)` The sidewalks weren't wet after the rain .

`(?)` Were the sidewalks wet after the rain `?`

`8` 

`(-)` I didn't start to work as a volunteer three years ago .

`(?)` Did you start to work as a volunteer three years ago `?`

`9` 

`(-)` They weren't in the library an hour ago .

`(?)` Were they in the library an hour ago `?`

`10` 

`(-)` Tom and his friends didn't go to orphanages to learn English yesterday .

`(?)` Did Tom and his friends go to orphanages to learn English yesterday `?`

`- - - - - - - -`

`@` QKD :

`(+)` S + was/were + ... `/` S + V2/ed + O .

`(-)` S + wasn't/weren't + ... `/` S + didn't + V + O .

`(?)` `(`Wh-question`)` Was/Were + S + ... `?` `/` `(`Wh-question`)` Did + S + V + O `?`

Công thức thì QKĐ (V: to be)

(+) S + was/were + ... 

(-) S + was/were + not ... 

(?) Was/Were + S ... ? 

S số ít, I, he, she, it + was

S số nhiều, you, we ,they + were

Công thức thì QKĐ (V: thường)

(+) S + V2/ed 

(-) S + didn't + V1 

(?) Did + S+ V1?

DHNB: ago, last (year, month ...), yesterday, in + năm QK, ...

-------------------------------------------------

1.

(-) Children didn't plant more trees.

(?) Did children plant more trees?

2.

(-) Tom wasn't a member of the Youth Club.

(?) Was Tom a member of the Youth Club?

3.

(-) The school wasn't closed due to the show.

(?) Was the school closed due to the show?

4.

(-) The organisation didn't provide shelter for the children.

(?) Did the organisation provide shelter for the children?

5.

(-) They weren't at school this morning.

(?) Were they at school this morning?

6.

(-) Tom didn't go to the hospital to provide food two weeks ago.

(?) Did Tom go to the hospital to provide food two weeks ago?

7.

(-) The sidewalks weren't wet after the rain.

(?) Were the sidewalks wet after the rain?

8.

(-) I didn't start to work as a volunteer three years ago.

(?) Did you start to work as a volunteer three years ago?

9.

(-) They weren't in the library an hour ago.

(?) Were they in the library an hour ago?

10.

(-) Tom and his friends didn't go to orphanages to learn English yesterday.

(?) Did Tom and his friends go to orphanages to learn English yesterday?

`color{orange}{~MiaMB~}`