The key answer of exercise 2

a)

• The article mentions registering in hotels as a situation where celebrities use fake names.
• Alotta Warmheart sounds like a lot of warm heart.
• Ross Vegas sounds like 'Las Vegas'
• George Clooney's fake name is the name of another star who doesn't look anything like him.

b)

1. All of them.
2. 1 → who / that are registered at hotels under their real name; 2 → who / that are trying to take their pictures; 3 → who / that are taking selfies; 4 → which / that involve wordplay; 5 → who were / got married in 2000 but were / got divorced five years later; 6 → which / that was used by George Clooney
3. present participle (ing form) or past participle

c)

1. b) Names involving wordplay are common.
2. b) The people working in the hotel thought the name was funny.
3. b) The hotel, built in the 1980s and regularly used by film stars, is famous.

• Rule 1 → present
• Rule 2 → past