must take
I need to take the first train.
Me debo tomar mi medicina cada seis horas.
I have to take my medicine every six hours.
Debo tomar el examen de ingreso hoy.
I have to take the entrance exam today.
I must seize this opportunity.
Todavía debo tomar mis píldoras.
I still have to take my pills.
Llámame a las cuatro; debo tomar el primer tren.
Call me at four o'clock; I have to catch the first train.
I have to catch a plane.
Dígame qué bus debo tomar para llegar a la estación, por favor.
Please tell me which bus I should take to get to the station.