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Deber Future Practice

Deber (must, should, to owe) in the future: 14 free exercises with an explanation after every answer, plus the full conjugation table.

•14 exercises•Regular -er•A1 – A2 level
IWhat to watch for

The future of deber is regular: deberé, deberás, deberá, deberemos, deberéis, deberán. It turns a duty into a future one: el año que viene deberás pagar más impuestos.

In everyday speech Spanish often prefers tener que (tendrás que) or the present, so deberé sounds formal — typical of rules, contracts and official notices: los participantes deberán presentar el DNI.

IIConjugation
deberFuture
yo
deberé
tú
deberás
él / ella / usted
deberá
nosotros
deberemos
vosotros
deberéis
ellos / ustedes
deberán
Fully regular in every tense, conjugated like comer; as a modal verb it has no everyday commands, so that tense is left out.

Download the deber conjugation worksheet (PDF) — free, with answer key

42 exercises on deber across 7 tenses on one printable worksheet: each tense opens with its conjugation table, and the answer key with short explanations is at the end. Fits A4 and US Letter. Free for classroom use — no sign-up.

Download PDF
IIIPractice exercises

Practice.

Answer first, then read the explanation. Don't skip it — that's the whole point.

Exercise 01 of 14Tag: Si clause
Fill in the blank

Si me dan el puesto, _____ mudarme a Barcelona. (deber)

If they give me the job, I'll have to move to Barcelona.

Exercise 02 of 14Tag: Tú form
Fill in the blank

El año que viene _____ pagar más impuestos, con tu nuevo sueldo. (deber)

Next year you'll have to pay more tax, with your new salary.

Exercise 03 of 14Tag: Obligation
Fill in the blank

Cada participante _____ presentar su documento de identidad. (deber)

Each participant must present their ID.

Exercise 04 of 14Tag: Cuando + future
Fill in the blank

Cuando nazca el bebé, _____ cambiarnos a un piso más grande. (deber)

When the baby is born, we'll have to move to a bigger flat.

Exercise 05 of 14Tag: Obligation
Fill in the blank

A partir de enero, todos los vehículos _____ llevar la etiqueta ecológica. (deber)

From January, all vehicles will have to display the eco label.

Exercise 06 of 14Tag: Yo form
Fill in the blank

Mañana _____ levantarme a las cinco para coger el avión. (deber)

Tomorrow I'll have to get up at five to catch the plane.

Exercise 07 of 14Tag: Cuando + future
Fill in the blank

Cuando cumplas dieciocho, _____ tomar tus propias decisiones. (deber)

When you turn eighteen, you'll have to make your own decisions.

Exercise 08 of 14Tag: Obligation
Fill in the blank

Según el contrato, el inquilino _____ avisar con dos meses de antelación. (deber)

According to the contract, the tenant must give two months' notice.

Exercise 09 of 14Tag: Si clause
Fill in the blank

Si seguimos así, _____ pedir un préstamo. (deber)

If we carry on like this, we'll have to ask for a loan.

Exercise 10 of 14Tag: Ellos form
Fill in the blank

Los alumnos que suspendan _____ repetir el examen en septiembre. (deber)

Students who fail will have to resit the exam in September.

Exercise 11 of 14Tag: Vosotros form
Fill in the blank

Durante la excursión, vosotros _____ seguir siempre al guía. (deber)

During the outing, you (all) will have to follow the guide at all times.

Exercise 12 of 14Tag: Cuando + future
Fill in the blank

Cuando yo termine la carrera, _____ devolver el préstamo de estudios. (deber)

When I finish my degree, I'll have to pay back my student loan.

Exercise 13 of 14Tag: Él/ella form
Fill in the blank

El nuevo director _____ tomar decisiones difíciles desde el primer día. (deber)

The new director will have to take difficult decisions from day one.

Exercise 14 of 14Tag: Obligation
Fill in the blank

Los pasajeros _____ facturar el equipaje dos horas antes del vuelo. (deber)

Passengers must check in their luggage two hours before the flight.

Every answer is explained

Not just a green check. A short paragraph telling you why.

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