---Heyuan develops so fast.

___(not run) so fast Don’t walk so fast. _____(not run)so fast so fast 的 fast 是形容词还是副词 求取英文名 我叫heyuan...男的! She ran so fast that she was ( ) Shenzhen is developing so fast 中文翻译 you shouldn't have run so fast 1.（ ）so fast!It's dangerous. why is western fast-food so popular Four years ago so fast so difficult什么意思? How did the internet get so popular so fast?