Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase for each of the blanks.

Language is considered a significant (31)_________ of communication in international relations. People in modern world have no longer been bound to their own countries. Moreover, in keeping (32)________ with speedy scientific developments nowadays, they must widen their (33)_________ relations with those highly developed nations in other parts of the world, owning to the fact that no one is able to (34)_________ with any natives in the world, it is necessary for people to choose to learn a foreign language as a word-wide common means of communication (35)______ their own mother tongue or native language. That is why English has been chosen by most people to be a foreign language to master. More and more people use English and the number of those who lean English as a foreign language has been increasing so rapidly that it has outnumbered that of any other.

Language is considered a significant (31)_________ of communication in international relations.