Mark the letter A,B,C or D on your answer sheet to show the underlined part that needs correction in each of the following question
In order for a doctor to (A) practice medicine in any hospital, it must be proved (B) that the doctor has the (C) qualities to do (D) so.
A. practice
B. that
C. qualities
D. so
Đáp án : C
C: qualifiers -> qualifications
ở đây phải dùng từ có nghĩa là bằng cấp (qualification)