8.The (火焰) of the burning candle soon went out. 9.It is impolite to (吐痰) in public. 10.The man used some (胶水) and paper to make the kite. 11.Mr Smith gradually a knowledge of the subject. 12.China has a long history of . 13.Your progress will us to work hard. 14.The church sings every Sunday morning. 15.The tree threw a long (影子) in the moonlight.

flame

spit

glue

acquired

civilis(z)ation

urge

choir

shadow