1 . Despite having to work tomorrow , they watch TV all night
( Despite= In spite of + N/Ving : Mặc dù )
2 . Although the film is interesting , I have to study for my final exam
( Although + Clause , Clause : Mặc dù)
3 . I used to walk to school last year
( used to + Vinf : đã từng quen với việc j )
$\boxed{\text{Nhyy}}$