Respuesta:
Ir - Go - Went
Observar/ Ver - Watch - Watched
Pensar - Think - Thought
Leer - Read - Read
Querer - Want - Wanted
Nadar - swim - swam
Sentarse - sit - sat
Hacer - do/does - did
Saber - know - knew
Ser/estar - am/is/are - was/were
Tener - Have - Had
Cortar - cut - cut
Amar - love - loved
Estudiar - Study - Studied
Explicación:
Debes aprendertelo de memoria...
