MARK THE LETTER A,B,C OR D ON YOUR ANSWER SHEET TO INDICATE THE WORD THAT DIFFERS FROMTHE REST IN THE POSITION OF THE MAIN STRESS IN THE FOLLOWING QUESTION

Câu 42: Mark the letter A,B,C or D on your answer sheet to indicate the word that differs fromthe rest in the position of the main stress in the following question.A.commercial B.essential C.national D.constructive