Chuyên đề 9: Hình thức phân từ
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:______ the fire for 12 hours,the firemen were able to put it out. A. Having fought B. To have fought C. Before they fought D. Fought

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______ the fire for 12 hours,the firemen were able to put it out.

 

Having fought

To have fought

Before they fought

Fought

Giải thích

Chọn A