specialize

intransitive verb Conjugación ,

specialise

intransitive verb Conjugación [ˈspeʃəlaɪz]

to specialize (in)

especializarse (en)

specialize

Francés

Alemán

Italiano

Complétez la séquence avec la proposition qui convient.

His friend … his leg the weekend before. That's why he didn't go skiing.
- had broken
- had broke