Many people see fad diets harmless ways of losing weight, and they are grateful to have them.
Many people see fad diets (3) ________harmless ways of losing weight, and they are grateful to have them.
A. by
B. like
C. through
D. as
Đáp án. D
Giải thích:
Cấu trúc: see somebody/something as somebody/something (coi ai/cái gì như ...)