MARK THE LETTER A, B, C, OR D ON YOUR ANSWER SHEET TO INDICATE THE UNDERLINED PART THAT NEEDSCORRECTION IN THE FOLLOWING QUESTION

Câu 16: Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needscorrection in the following question.The president said it was imperative that the release of all hostages was secured.A. theB. saidC. ofD. was