The key answer of exercise 4
The key to exercise solutions in chapter Video 7 - Air pollution tracking for the textbook Outcomes Intermediate - Student's Book with authors Hugh Dellar and Andrew Walkley from National Geographic Learning
Question
With your partner, decide if the sentences are true (T) or false (F). Then watch the video again and check your answers.
Answer
- F (three)
- T
- F (every second)
- T
- F (yellow = moderate, though over a lifetime it could be ‘a significant health factor’)
- F (they might do in the future)
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