The key answer of exercise 6
The key to exercise solutions in chapter 7.9 - Self-check for the textbook Focus 4 (2nd edition) - Workbook with authors Daniel Brayshaw from Pearson Education
Question
Complete the second sentence so that it means the same as the first.
Answer
- was thought that
- is said to have had
- were estimated to be
- is claimed to cause
- is known to have revolutionised
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