Bạn tham khảo,
1. I won’t buy a cake for you.
2.Marie didn’t have to pay for a babysitter for Luke last night.
3. We don’t have to go back to school until January 10th.
4. Peter didn’t need to go to the hospital in the end.
5. You needn’t worry about your cat.
6. I know I shouldn’t have any more cream cakes.
7. You mustn’t tell anyone what I‘ve just said.
Bella