Question

Editing
Walking is the key on fitness
for people on all ages
involuantry at the early age
they can become effective insurance.

Answer 1

on = to

on = of

3 nhi ata

they = which

Answer 2

Hey mate☺

walking is the key on fitness

_____________________________

incorrect- ON correct-TO

for people on all ages

_____________________________

incorrect-ON correct-OF

involuntary at the early age

_____________________________

incorrect-AT correct-IN

they can become effective insurance.

____________________________

incorrect-THEY correct-WHICH

Hope it helps you☺✌✌