有____份小棒,每份小棒有____根,一共有____根小棒,平均每份小棒有____根,有这样的____份。
练习本的厚度约是2____.
一根筷子的长度约是2____.
卧室门的高度约是2____.
I like the ships and boats on the sea.
– Would you mind my closing the window, please?
– _______. We need some fresh air.