تو کدوم جمله کلمه ی " fast" صفته ؟

وقتی کلمه‌ای اسم رو توصیف کنه می‌شه صفت، دو نوع صفت داریم یکی قبل از اسم میاد مثل این

A fast car

و یکی بعد از فعل‌های to be  میاد مثل این

The car is fast

Hi.

In  such sentences:
 

1. he was driving too fast.

2. we're going to have to get to the bottom of this fast.
3. the ship was held fast by the anchor chain.

4. they were too fast asleep to reply.