FOR THOUSAND OF YEARS, MAN (A) HAS USED ROCKS (B) AS MAIN MATERIALS F...

Câu 3: For thousand of years, man (A) has used rocks (B) as main materials for building

houses, made (C) fences, pavements or even roofs (D) for houses .

Blacken the letter A, B, C or D on your answer sheet to indicate the word with the main stress

different from that of the other three words in each question.