it this your book?
it that your watch?
it this your umbrella?
it that your flat?
it this your fridge?
it that your bedroom?
it these your glasses?
it those your keys?
it these your houses?
можете заменять this на that, these на those, это абсолютно не важно
this-это (ед.ч.)
that-то (ед.ч.)
these-эти (мн.ч.)
those-те (мн.ч.)
