For thousands of years, man has used rocks as main materials for building houses, made fences, pavements or even roofs for houses. A. man B. rocks C. made
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
For thousands of years, man has used rocks as main materials for building houses, made fences, pavements or even roofs for houses.
A. man
B. rocks
C. made
D. roof