Respuesta:
BASE FORM: eat
PRESENT PARTICIPLE: eating
BASE FORM: brush
PRESENT PARTICIPLE: brushing
BASE FORM: listen
PRESENT PARTICIPLE: listening
BASE FORM: play
PRESENT PARTICIPLE: playing
BASE FORM: do
PRESENT PARTICIPLE: doing
BASE FORM: make
PRESENT PARTICIPLE: making
BASE FORM: shave
PRESENT PARTICIPLE: shaving
BASE FORM: talk
PRESENT PARTICIPLE: talking
BASE FORM: watch
PRESENT PARTICIPLE: watching
BASE FORM: read
PRESENT PARTICIPLE: reading
BASE FORM: check
PRESENT PARTICIPLE: checking
BASE FORM: take
PRESENT PARTICIPLE: taking
BASE FORM: write
PRESENT PARTICIPLE: writing
BASE FORM: get
PRESENT PARTICIPLE: getting
BASE FORM: travel
PRESENT PARTICIPLE: traveling
BASE FORM: study
PRESENT PARTICIPLE: studying