1. 选择sound, voice或noise填空。

1. （1） Last Sunday, a group of pupils talked happily in a loud as they went to the countryside by bike.
3. （2） Please don't make so much . Your grandpa is sleeping now.
5. （3） The that the children made woke me up.
7. （4） My sister Lily sings well because she has a sweet.
9. （5） Please talk in a low . Don't wake up the baby.
11. （6） At midnight, we heard a very strange.