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

It is difficult to imagine that at one time its harbour used to be visited (79) …………………….. over 2,000 ships a week,

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It is difficult to imagine that at one time its harbour used to be visited (79) ……………………..over 2,000 ships a week,

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Giải thích

. It is difficult to imagine that at one time its harbour used to be visited (79) by over 2,000 ships a week