OIL, COAL AND NATURAL GAS ARE ____________ FUELS MADE FROM DECAYED...

14. - KIEM TRA 24 TUAN
Tiếng Anh KIEM TRA 24 TUAN
14.

Oil, coal and natural gas are ____________ fuels made from decayed material from animals and

plants.

a. unleaded

b. smokeless

c. solid

d. fossil