1. 根据句意，从方框中选择恰当的单词填空，有的需要变换形式。

temperature, add, plate, cover, autumn

1. （1） Inthe weather is becoming cooler and cooler.
3. （2） He is washing those . They are dirty.
5. （3） Theof the water is just right for taking a shower.
7. （4） My mother some water to the soup just now.
9. （5） She often  the table with a tablecloth (,桌布) to keep it clean.