In this exercise, you should choose the correct form of the stem-changing verbs in the preterite to make grammatically correct sentences.

The stem of the verbs changes only in the first-person singular:
– Verbs ending with **-car** – the *c* changes to *qu* before the *é*
– Verbs ending with **-gar** – the *g* changes to *gu* before the *é*

Remember that **the verb matches the subject in person and number.**

1. Yo **llegué** tarde…
(I arrived late…)

The subject is first-person singular, so we used the first-person singular form of the verb *lle**gar** (to arrive).* Since it is the first-person singular, the stem of the verb changed.

2. Juan **buscó** a sus amigos…
(Juan searched for his friends…)

Juan is third-person singular, so we used the third-person singular form of the verb *bus**car** (to search).*

3. Yo **toqué** la guitarra…
(I played the guitar…)

The subject is the first-person singular, so we used the first-person singular form of the verb *to**car** (to play)*. Since it is the first-person singular, the stem of the verb changed.

4. Los estudiantes **sacaron** buenas notas…
(The students got good grades…)

The subject in this sentence is third-person plural, so we used the third-person plural form of the verb *sa**car** (to get).*

5. Yo **practiqué** natación…
(I practiced swimming…)

The subject is the first-person singular, so we used the first-person singular form of the verb *practi**car** (to practice)*. Since it is the first-person singular, the stem of the verb changed.

See the **detailed explanation.**

1. C. llegué
2. B. buscó
3. C. toqué
4. C. sacaron
5. D. practiqué

In this exercise, you should put the correct form of the stem-changing verbs in the preterite to make grammatically correct sentences.

The stem of the verbs changes only in the first-person singular:

– Verbs ending with **-car** – the *c* changes to *qu* before the *é*
– Verbs ending with **-gar** – the *g* changes to *gu* before the *é*

Remember that **the verb matches the subject in person and number.**

1. Yo **practiqué** el básketbol…
(I practiced basketball…)

The subject is the first-person singular, so we used the first-person singular form of the verb *practi**car** (to practice)*. Since it is the first-person singular, the stem of the verb changed.

2. Yo **toqué** el piano…
(I played the piano…)

Again, the subject is the first-person singular, so we used the first-person singular form of the verb *to**car** (to play)*. Since it is the first-person singular, the stem of the verb changed.

3. Mi hermana **sacó** toda la ropa vieja…
(My sister took out all old clothes…)

Mi hermana is third-person singular, so we used the third-person singular form of the verb *sa**car** (to take out/ to throw out).*

4. Nosotros **buscamos** un buen lugar…
(We searched for a good place…)

The subject here is first-person plural, so we used the first-person plural form of the verb *bus**car** (to search).*

5. Yo **llegué** primero…
(I arrived first…)

The subject is first-person singular, so we used the first-person singular form of the verb *lle**gar** (to arrive).* Since it is the first-person singular, the stem of the verb changed.

See the **detailed explanation.**

1. practiqué
2. toqué
3. sacó
4. buscamos
5. llegué

This exercise aims to help you practice writing.

You were given verbs that end with **-car** and **-gar**, which you should use in the preterite form to talk about what you did yesterday. Since you should write in the first-person singular, please look below for a useful explanation of how to conjugate these verbs in the preterite.

The stem of the verbs changes only in the **first-person singular**(the one you are required to use):

– Verbs ending with **-car** – the *c* changes to *qu* before the *é*
– Verbs ending with **-gar** – the *g* changes to *gu* before the *é*

Use the example sentences below as a reference to how the verb should look like, change the rest of the sentence (your activity) to your liking.

1. pa**gar**

– Ayer yo **pagué** la cena.
(Yesterday, I paid for dinner.)

2. bus**car**

– Yo **busqué** un libro de ciencias ayer.
(I searched for a science book yesterday.)

3. lle**gar**

– Yo **llegué** a la conclusión lógica ayer.
(I arrived at a logical conclusion yesterday.)