Động từ đi cùng động từ khuyết thiếu như should, could, may, might, would sẽ ở dạng nguyên thể em nhé.

1. You shouldn't laugh loudly in a pagoda.
2. You should ask for permission before taking photos there.
3. You should bring enough warm clothes since it's cold in UK.
4. You shouldn't wear your shoes entering a temple.
5. They shouldn't play loud music this late.
6. They should buy beers from my groceries story to enjoy it with their karaoke.
7. You shouldn't put your chopsticks straight up in your rice bowl because it is a sign of inviting ghosts into the house.
8. You should finish your food before drinking.

1. don't have to
2. Do I have to sign this form?
3. have to
4. mustn't 
5. have to
6. mustn't
7. don't have to
8. mustn't