Eight
Eight backpacks.
Eight bottles.
Eight raincoats.
Eight chairs.
Eight lights.
Eight sticks.
Eight hot dogs.
Eight friends.

参考译文如下：

8
8个背包。
8个瓶子。
8件雨衣。
8把椅子。
8盏灯。
8根枝条。
8个热狗。
8位朋友。