Catherine is studying (A) law (B) at the university, (C) and so does (D) John.31/64Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction (from 30 to 34) Catherine is studying (A) law (B) at the university, (C) and so does (D) John. studying law at the university doesGiải thíchĐáp án là D Mệnh đề 1 dùng thì hiện tại tiếp diễn-> mệnh đề sau “does”-> “is”.