1. (2017七下·江阴期中) (B) 根据句意，写出括号内所给单词的适当形式

1. （1） My mother's (forty) birthday is coming. I'd like to give her something special as a present.
   
3. （2） It's (danger) to run after each other on the street.
5. （3） Look! The window is (break). Let's go and see what is happening.
7. （4） The road is covered with fallen (leaf) every morning.