1. $\textit{Are those gloves Jenny's ?}$
$\textit{Yes they are Jenny's gloves}$
2. $\textit{Do those bikes belong to the twins ?}$
$\textit{Yes they're the twins's bikes}$
Công thức : Tobe + those/this/that/these + st/N/.. + ... ?
Do + those/this/that/these + st/N/.. + ... ?