O, onu hangi kitabı satın alacağı konusunda yönlendirdi.
- She advised him on which book to buy.
Biz onların hangi trenle geleceklerini bilmiyorduk.
- We didn't know on which train they'd be coming.
... to other rockets in that class, which ...
... the villagers used to raise the spirits for the droppings which they used as a ...