Mark tho letter A, B, C or D to indicate tho word/phrases SIMILAR in moaning to the underlined word(s) in each of the following questions.

Chimpanzees are frequently used as stand-ins for human beings in experiments.

Suy nghĩ và trả lời câu hỏi trước khi xem đáp án

ATNETWORK
ADMICRO
YOMEDIA
ZUNIA9