Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions
Psychologists have observed that a large part of the _________ activity is beyond one’s awareness.
A. brain whose
B. brain that
C. brainless
D. brain’s
Chọn D
“brain’s activity”: hoạt động của não
Không dùng brain whose activity vì nếu như vậy thì trong câu sẽ thiếu hẳn 1 vế