Three questions

[Emanuelli]

Hello! Help me please:

a) The practice of sports make/makes them tired.? (which is right?)

b) What page is this exercise at? (Is my question right?)

c) Don't distract yourself. (Do I need to use the reflexive pronoun here?)

Thanks.

[Tdol]

a)- I's use the singular, but I'd say 'Practising sports makes them tired'. (Americans would say 'practicing'.)
b)- on
c)You would need the refelexive pronoun, but 'don't get distracted' sounds more natural to me.