The key answer of exercise 1
The key to exercise solutions in chapter 5.5 - Listening and Vocabulary for the textbook Wider World 4 - Workbook with authors Damian Williams from Pearson Education
Question
Complete the puzzle. What is the mystery word?
Answer
- sound barrier
- gravity
- helium
- balloon
- parachute
- engine
- force
- oxygen
Mystery word → atmosphere