This backpack must belong to _______.

A．Carla’s

B．Carla

C．hers

D．she

— Look, here’s an English book on the desk, Is it yours?
— No, it isn’t _______. It must belong to _______.

A．mine; Carla’s

B．my; Carla

C．my; Carla’s

D．mine; Carla

The French book must be Li Ying’s. She’s the only one who’s studying French.

A．belong to Li Ying’s

B．belong to Li Ying

C．belong Li Ying’s

D．belong Li Ying