Cover of the textbook Into Focus B1

The key answer of exercise 1

The key to exercise solutions in chapter 2 - Revision for the textbook Into Focus B1 with authors Sue Kay, Vaughan Jones, Silvia Minardi e Daniel Brayshaw from Pearson Longman

Question

Complete the sentences with the correct form of the verbs below. There are two extra words.

Answer

  1. observed
  2. collected
  3. invented
  4. are doing
  5. develop

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