Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có đáp án (Đề 5)

There are about 3,000 living languages in the world, but only six of them are the (76) ………………….. important ones.

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There are about 3,000 living languages in the world, but only six of them are the (76) ………………….. important ones.

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Giải thích

There are about 3,000 living languages in the world, but only six of them are the (76) most important ones.