1. (2020七下·吴兴期中) 用方框中所给单词填空，每词限用一次，每空限填一词。

birds      well      hundreds      singing      over

1. （1）  of people come to the Central Park every day.
3. （2） He's  fifty years old, but he looks young.
5. （3） Listen! Who is a song in the next room?
7. （4） How many  are there in the tree?
9. （5） She can speak English , so she often helps me.