Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có lời giải chi tiết (Đề 1)

Some of the people were standing in the street watched the parade, while others were singing songs.

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Some of the people were standing in the street watched the parade, while others were singing songs.

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Giải thích

Some of the people were standing in the street watched the parade, while others were singing songs. 

watching