7 Complete the text with the words below. There are two extra words. before described for on there when why Witnesses to crimes are not always very good at remembering what they have seen. The appearance of a suspect is often ¹ differently by different witnesses. Part of the problem is that a crime usually happens very quickly, and people often feel very nervous while it is going ² They then can't remember what they have seen, even if it was just the day ³ People also often imagine things when they don't have a clear picture of something or someone. For example, ⁴ a witness says that she saw a man with blonde hair and blue eyes, it's often the case that she didn't actually see the eye colour at all, but she's guessed it because she knows the colour of the man's hair. Of course, this is very frustrating for the police. But now that ⁵ are CCTV cameras in so many places, police officers often have real images to use when witnesses can't remember all the facts.