Are these correct? My answers are marked with *** Thank you.

1. ¿Qué han hecho Uds. hoy?
***Han trabajado en la oficina.
Hemos caminado al parque.
No lo hemos hecho.
Sí, lo han hecho.

2. ¿Habéis vuelto de vacaciones?
No, hemos decidido quedarnos una semana más.
Sí, habéis ido temprano.
Sí, hemos cumplido veinte años.
***No, no habéis regresado todavía.

3. Eres hija única, ¿no?
No, no eres hija única.
No, no soy estudiante de intercambio.
Sí, soy gemela.
***Sí, no tengo hermanos.

4. ¿Me has invitado a la fiesta?
No, no quiere invitarnos.
Sí, he ido a la fiesta.
***Sí, te he invitado.
No, no te has invitado.

5. Yo _______ para saludar a mi jefe.
hemos vuelto
***he venido
ha visto
has regresado

6. El señor ya ________su nombre.
***he decidido
dicho
han dado
ha dicho

7. Los trabajadores _____ el problema.
han resuelto
***hemos regresado
resolverlos
has resuelto

8. Alicia y yo ya _____ el reporte.
he escrito
has escrito
***hemos escrito
habéis escrito

9. Vosotras ______ mis mejores amigas durante este tiempo difícil.
he sido
habéis sido
hemos sido
***han sido

10. Han entendido todos Uds. la lección esta semana?
Sí, la hemos comprendido.
Sí, lo hemos entendido.
***Sí, los entienden.
Sí, lo comprendemos bien.

I'll send this to our Spanish expert, SraJMcGin.

Answering questions is very difficult for most students. Here is how I suggest you "tackle" them:

1. Look at the Spanish : ¿Qué han hecho Uds. hoy?
2. Translate it into English: What have you all dine today?
3. ANSWER FIRST IN ENGLISH: We have walked to the park.
4. Now, put that into Spanish: (Nosotros) hemos caminado al parque.
5. Someday you will see a statement and have to ask the question that elicited that statement. It's good practice to do it now to see if you come up with the original question.

I have done #1 for you. Try to follow the pattern.

#2. Habéis is the Present Tense of vosotros/vosotras (you-all-plural-familiar) so the answer must be "nosotros....."and it is the first choice. (not a bad idea to label the answers: a, b, c.

3. correct

4. correct

5. correct

6. Subject and verb MUST agree: El señor = él (3rd person singular) ha dicho

7. Los trabajadores = Ellos (3rd person plural) han resuelto

8. correct

9. Vosotras (2nd person plural, familiar) = habéis sido

10. Practice the "format" of #1.
Have you all understood = We have = Sí, la hemos comprendido

Since you had so much trouble (4/10), which is not passing, I'll flag this so I can come back later and answer any questions you might have.

Sra

Thank you Sra for explaining it so well. I think I went wrong because I was trying to match the pronoun (?) instead of the verb. For example in #10 I saw Uds. and thought it should go with los. Thank you again for your help.

You are entirely welcome! Glad you understand it better now.

Sra

Yes, these are correct except for one mistake in question 7. The correct answer should be "han resuelto" instead of "hemos regresado."

To find the correct answers, it is important to understand the concept of verb conjugation in Spanish. In this exercise, you are asked to choose the correct form of the verb "haber" (to have) to match the subject and tense.

To get the answer, you should first identify the subject of the sentence and the tense being used. Then, you need to conjugate the verb "haber" accordingly.

For example:

1. ¿Qué han hecho Uds. hoy?
The subject is "Uds." (ustedes - plural you) and the tense is present perfect. To form the present perfect tense, we use the auxiliary verb "haber" in the present tense (han) followed by the past participle of the main verb (hecho). "Han trabajado en la oficina" means "They have worked in the office." This is the correct answer.

2. ¿Habéis vuelto de vacaciones?
The subject is "vosotros/as" (plural you) and the tense is present perfect. To form the present perfect tense, we use "haber" in the present tense (habéis) followed by the past participle of the main verb (vuelto). "No, no habéis regresado todavía" means "No, you have not returned yet." This is the correct answer.

And so on for the rest of the questions, applying the same logic.