2. He has got a calculator.
It's his calculator
3. She has got a mask.
It's her mask
4. They have got a motorcycle.
It's their motorcycle
5. We have got hats.
They're have got hats.
6. You have got a scarf.
It's your scarf
(have мы употребляем когда говорим I,you,we,they (краткая форма have-'ve) в примере это написано
(has употребляем при he,she,it (краткая форма- 's)
это на всякий случай))