Question

to begin to

to build

to buy

empezar a
comprar
construir

Explanation:

This is a vocabulary matching task where English infinitive phrases are paired with their Spanish translations.

1. "to begin to" is the English equivalent of the Spanish phrase "empezar a".
2. "to build" translates to the Spanish verb "construir".
3. "to buy" translates to the Spanish verb "comprar".

Answer:

1. to begin to → empezar a
2. to build → construir
3. to buy → comprar