PEOPLE SING BECAUSE ... . A. THEY ARE GOOD AT SINGING B. THEY KNOW...
21. People sing because ... .
A. they are good at singing
B. they know many songs.
C. they feel happy.
D. they want to tell a story.
21. People sing because ... .
A. they are good at singing
B. they know many songs.
C. they feel happy.
D. they want to tell a story.