17. Which verbs from the box complete the sentences?
distract recall realise imagine perceive
1. When did you first _ you were being followed?
2. Please don't _ me. I'm trying to concentrate on my essay.
3. We _ the world through our senses. But can we trust what our senses tell us?
4. It's difficult to _ world different from the one we know.
5. He had suffered a blow to the head and he couldn't _ what had happened.​