The key answer of exercise 9
The key to exercise solutions in chapter 10 - Grammar for the textbook New Headway Pre-Intermediate - Workbook with authors Liz Soars, John Soars and Paul Hancock from Oxford University Press
Question
Read the text. Put the verbs in brackets in the correct tense, active or passive.
Answer
- is used
- was invented
- wrote
- started
- was invented
- was made
- kept
- was brought
- was built
- has been made
- uses
- be recycled
- is expected
- is done
- be read
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