The question that logically corresponds would be "d'où viens tu ?"
I don't know if I properly undeerstood the second part of the exercise but the "de" corresponds to the "d' " in the question.
It woudl be c'est la bonne
(la sœur de mon cousin est) means my cousin's sister is,
so i guess the answer is ma cousine
Bonjour
"We sometimes will make the past participle agree with the direct object"
TRUE
With "être" the past participle always agrees with she subject.
ex= il est arrivé / elle est arrivée // ils sont arrivés / elles sont arrivées
With "avoir" the past participle agrees with the direct object <em>OR</em> direct object pronoun <em>ONLY if they are before the passé composé form tense.</em>
J' ai vu mes frères. <em>(doesn't agree because the direct object is after the verb) BUT ---> Je </em><em>les</em><em> ai vu</em><em>s</em>
<em>J'ai vu mes sœurs . ---->Je </em><em>les</em><em> ai vu</em><em>es.</em>
<em>J'ai lu des livres ----------> </em><em>Les livres </em><em>que j'ai lu</em><em>s</em>
<em>J'ai pris une assiette ----></em><em> l'assiette</em><em> que j'ai pris</em><em>e</em>
hope this helps<em> ☺☺☺</em>
