Identify the one underlined word or phrase....

Câu hỏi: Identify the one underlined word or phrase. A, B, C or D - that must be changed for the sentence to be correct. Despite of  (A)  a language barrier, humans (B) have managed to communicate with others (C) through sign language, in which (D) certain motions stand for letters, words, or ideas.

A. Despite of

B. Humans

C. With others

D. In which