1. (2020七下·丽水期中) 用方框中所给单词的适当形式填空。每词限用一次，每空限填一词。

bird,   good,   hundred,   sing,   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.