$\text{1. }$Did the children use to drink orange juice?- No, they didn't

$\text{2. }$Did we use to eat chese?- Yes, we did

$\text{3. }$Did the swimming pool use to be clean?- Yes, it did

$\text{4. }$Did Cathy use to have long hair?-No, she didn't

$\text{5. }$Did the zoo use to have lots of animals?- No, it didn't

$\text{6. }$Did Mark and Jack use to play lots of tennis?- Yes, they did

$\text{7. }$Did you use to watch TV every day?- No, I didn't

- Cấu trúc "used to+ V(inf)": Diễn tả hành động thường làm trong quá khứ nhưng giờ không còn làm nữa.

(+) S+ used to+ V(inf)

(-) S+ didn't use to+ V(inf)

(?) Did+ S+ use to+ V(inf)?

Yes, S+ did

No, S+ didn't

$\textit{# Themoonstarhk}$

`2` Did the children use to drink orange juice?

`->` No , they didn't

`3` Did you eat cheese ? 

`->` Yes , I did

`4` Did the swimming pool use to be clean?

`->` Yes , it did

`5` Did Cathy use to have long hair?

`->` No , she didn't

`6` Did the zoo use to have lots of animals?

`->` No , it didn't

`7` Did Max and Jack use to play lots of tennis?

`->` Yes , they did

`8` Did you use to watch TV every day?

`->` No , I didn't

`@` Công thức áp dụng.

`+)` S + used to + Vinf 

`-)` S + didn't + use to + Vinf

`?)` Did + S + use to + Vinf

Câu trả lời : Yes , S + did/No , S + didn't.