Ⅰ.单句语法填空
1．Organizers appealed ________ the crowd not to panic.
2．The clothes that my mother bought yesterday are easy ____________(wash)．
3．At the graduation ceremony，our headmaster required us to raise our competitive ________(aware) in modern society.
4．We will adopt his suggestion ________ the leading body be recoganized as soon as possible.
