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Creer Conditional Practice

Creer (to believe, to think) in the conditional: 14 free exercises with an explanation after every answer, plus the full conjugation table.

•14 exercises•Spelling change i→y•B1 – B2 level
IWhat to watch for

The conditional of creer keeps the double e of the infinitive: creería, creerías, creería, creeríamos, creeríais, creerían. It is regular, and yo and él share creería.

It imagines reactions (nadie lo creería, si te lo contara no me creerías) and, in polite speech, softens an opinion: yo creería que es mejor esperar, I'd tend to think it's better to wait.

IIConjugation
creerConditional
yo
creería
tú
creerías
él / ella / usted
creería
nosotros
creeríamos
vosotros
creeríais
ellos / ustedes
creerían
Regular except that an unstressed i between vowels becomes y: creyó, creyeron; accents in creí, creíste and creído.

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

48 exercises on creer across 8 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.

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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 lo contara otra persona, no lo _____. (creer)

If someone else told me, I wouldn't believe it.

Exercise 02 of 14Tag: Si clause
Fill in the blank

Si te contara lo que pasó, no me _____. (creer)

If I told you what happened, you wouldn't believe me.

Exercise 03 of 14Tag: Hypothetical
Fill in the blank

Nadie _____ que tienes cincuenta años; pareces mucho más joven. (creer)

Nobody would believe you're fifty; you look much younger.

Exercise 04 of 14Tag: Hypothetical
Fill in the blank

Con pruebas, nosotros _____ tu versión sin problema. (creer)

With proof, we'd believe your version without any problem.

Exercise 05 of 14Tag: Future in the past
Fill in the blank

Pensé que mis padres me _____, pero no fue así. (creer)

I thought my parents would believe me, but they didn't.

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

Yo _____ que es mejor esperar a mañana, pero tú decides. (creer)

I'd tend to think it's better to wait until tomorrow, but it's up to you.

Exercise 07 of 14Tag: Tú form
Fill in the blank

¿Tú _____ a un político que prometiera bajar todos los impuestos? (creer)

Would you believe a politician who promised to cut all taxes?

Exercise 08 of 14Tag: Future in the past
Fill in the blank

El detective dijo que el juez no _____ esa coartada, y tenía razón. (creer)

The detective said the judge wouldn't believe that alibi, and he was right.

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

Si fuéramos más ingenuos, _____ todo lo que dicen los anuncios. (creer)

If we were more naive, we'd believe everything the adverts say.

Exercise 10 of 14Tag: Si clause
Fill in the blank

Si no tuviera las fotos, mis amigos nunca _____ que conocí a Shakira. (creer)

If I didn't have the photos, my friends would never believe I'd met Shakira.

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

¿Vosotros _____ en fantasmas si durmierais en un castillo? (creer)

Would you (all) believe in ghosts if you slept in a castle?

Exercise 12 of 14Tag: Hypothetical
Fill in the blank

Yo no _____ ni una palabra de ese anuncio, ni aunque lo dijera un experto. (creer)

I wouldn't believe a word of that advert, not even if an expert said it.

Exercise 13 of 14Tag: Si clause
Fill in the blank

¿Quién _____ algo así si no lo viera con sus propios ojos? (creer)

Who would believe something like that without seeing it with their own eyes?

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

Si fueras detective, ¿_____ esa historia? (creer)

If you were a detective, would you believe that story?

Every answer is explained

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