Question

what____you do on holiday?
well,i like swimming,

and____your boyfriend like swimming?
no, he___he can't swim! he dosen't ____the sea

Answer 1

hola, tienes que utilizar el auxiliar Do, ya que si ves las respuestas de las preguntas todas están en presente por lo tanto:

What do you do on holiday?
well,i like swimming,

and do your boyfriend like swimming?
no, he don't. He can't swim! he doesn't swimming in the sea