Bộ 5 đề thi giữa kì 2 Tiếng Anh 9 Global Success có đáp án - Đề 4

People in the world don't speak the same language, SO there are problems in communication. (spoke)

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People in the world don't speak the same language, SO there are problems in communication. (spoke)

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Giải thích

If people in the word spoke the same language, there wouldn't be problems in communication.