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.

Question 43. (A) Research in the USA on acupuncture (B) has focused on (C) their use in (D) pain relief and anesthesia.

A. Research                          B. has focused                  C. their                              D. pain relief

Question 44. A food (A) additive is (B) any chemical that food manufactures (C) intentional add to their (D) products.

A. additive                           B. any chemical                 C. intentional                    D. products

Question 45. Chocolate is prepared by a (A) complexity process of cleaning, (B) blending and roasting cocoa beans, which (C) must be ground and (D) mixed with sugar.

A. complexity                      B. blending                       C. must be                         D. mixed

19. Đề thi thử THPT 2021 - Tiếng Anh - Nhóm GV MGB - Đề 19 - có lời giải