`1` I didn't go to Vung Tau for last vacation 

`?` Did you go to Vung Tau for last vacation 

`2` She didn't have a lot of friends in Ha Noi 

`?` Did she have a lot of friends in Ha Noi ? 

`3` His uncle didn't take him to see Cham Temple

`?` Did his uncle take him to see Cham Temple ? 

`4` Liz didn't buy a lot souvenirs 

`?` Did Liz buy a lot souvenirs ? 

`5` They didn't put the fish in a big bag 

`?` Did they put the fish in a big bag ? 

`6` I didn't eat only meat in my meals in Nha Trang

`?` Did you eat only meat in my meals in Nha Trang ?

`7` He didn't think the little fish was the most beautiful 

`?` Did he think the little fish was the most beautiful ? 

`8` Ba didn't wear the cap with a dolphin on it

`?` Did Ba wear the cap with a dolphin on it ? 

`9` Liz didn't teach Ba some English 

`?` Did Liz teach Ba some English ? 

`10` They didn't speak to Liz about her vacation in Nha Trang

`?` Did they speak to Liz about her vacation in Nha Trang ? 

`@` Cấu trúc : 

`+)` S + Ved/V2 + O 

`-)` S + didn't + V nguyên + O 

`?)` Did + S + V nguyên + O ?