The key answer of exercise 4

a)

1. a lecture → This is factual information, expressed in formal language, and it isn't selling anything.
2. a piece of fiction → The extract uses the past tense to describe part of a story and contains thoughts and actions as well as descriptions.
3. an ad → It contains notes rather than full sentences and adjectives that focus on positive aspects.
4. a lecture → This is factual information, expressed in formal language, and it isn't selling anything.
5. a piece of fiction → This uses many adjectives to create an atmosphere and is told in the past tense, which suggests it is a story.

b)

1. shady → neutral - depends on whether you are in a hot or cold country
2. gloomy → negative; dejected → negative; dreary → negative; grey → neutral - depends on whether it's describing the colour or the mood
3. roomy → positive; spacious → positive; good → positive; airy → positive; large → positive
4. native → neutral; chilly → negative
5. poky → negative; tiny → negative; cramped → negative; gaudy → negative; red, purple, yellow → neutral