I tried to translate the Italian text into French and English.

When you have time, please tell me if this is correct.

A: Quanti figli ha, Signor Pelli?

B: Ho due figli, un figlio e una figlia.

A: Quanti anni ha Suo figlio?

B: Ha diciannove anni, e la figlia ha quindici anni.

A: Combien d’enfants avez-vous Monsieur Pelli?

B: J’ai deux enfants, un fils et une fille.

A: Quel âge a votre fils?

B: Il a dix-neuf ans, et la fille a quinze ans.

How many children do you have Mr, Pelli?

I have two children, a son and a daughter.

How old is your son?

He is nineteen years old, and my daughter is fifteen years old.

MOLTO/TANTO - BEAUCOUP - MANY/MUCH

Ci sono molti fiori nel giardino.

C’è tanta gente in piazza.

Il y a beaucoup de fleurs dans le jardin.

Il y a beaucoup de monde sur la place.

There are many flowers in the garden.

There are lots of people in the square.

POCO - PEU - LITTLE/FEW

Abbiamo poco tempo.

Ci sono poche persone nell’aula.

Nous avons peu de temps.

Il y a peu de personnes dans la salle de classe.

We have little time. (...we don't have much time. is better?)

There are few people in the classroom.

ALCUNO - QUELQUE - SOME

Ho alcune domande.

Alcuni impiegati sono italiani.

J’ai quelques questions.

Certains employés sont italiens.

I have some questions.

Some employees are Italian.

QUALCHE

Ho qualche domanda.

J’ai quelques questions.

I have some questions.

QUANTO... - COMBIEN DE... - HOW MANY... / HOW MUCH...

Quanti libri compra?

Quante macchine ha?

Quanto zucchero vuole?

Quanta acqua rimane?

Combien de livres achetez-vous?

Combien de voitures avez-vous?

Combien de sucre voulez-vous?

Combien d’eau reste-t-il?

How many books do you buy?

How many cars do you have?

How much sugar do you want?

How much water is left?