Pencil 鉛筆
Eraser 橡皮
Pencil case 鉛筆盒
where is the pencil ?鉛筆在哪兒
it's on the table .它在桌子上面
it's in the pencil case .它在鉛筆盒里面
where is the eraser ?橡皮在哪兒
it's on the table .它在桌子上面
It's in the pencil case.它在鉛筆盒里面
Where is the pencil case?鉛筆盒在哪兒
It's in the backpack.他在背包里面。