ADMICRO
All we really know is that men, unlike animals, somehow invented certain sounds to express thoughts and feelings, actions and things so that they could communicate with each other; and that later they agreed _____ certain signs, called letters, which could be combined to represent those sounds, and which could be written down.
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ZUNIA12
Lời giải:
Báo saikiến thức: từ vựng
Giải thích: agree upon st: đồng tình ấn đề gì
ZUNIA9
AANETWORK