Soot comes from the incomplete combustion of coal, oil, wood and other fuels. A. heating B. releasing C. burning
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
Soot comes from the incomplete combustion of coal, oil, wood and other fuels.
A. heating
B. releasing
C. burning
D. cooking