Sagot :
Answer:
II.Put a check (/) on statement that shows the importance of sound in our daily life.
✓ 17 Sound helps us to communicate with others.
✓ 18. Through sound we can understand the context of the words spoken
✓ 19. Sound can help people to protect themselves from danger such as the sound or hom of the train and other vehicles war people to give way.
✓ 20. Sound produces signals.