LÉPÉS 1Válassza ki a helyes lehetőséget
LÉPÉS 2Tegye az Önnek tetsző gyakorlatokat a Kedvencek közé
The demonstrative word (this/that etc.) must agree with its noun. In the example, kind is singular and so this must agree with it.
Baggage, another word for luggage, can't be used in the plural either: The baggage is ready for the train.
(A dozen = 12): I'd like to buy a dozen eggs. When dozen isn't preceded by a numeral (like three) or by a we use the plural form: There were dozens of eggs