Choose the best answer from the four options given (A, B, C, or D) to complete each sentence. 

Since the telephones in the conference room are not working, a technician has been called in to fix___________.

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

ATNETWORK
ADMICRO
YOMEDIA
ZUNIA9