Chuyên đề 9: Hình thức phân từ
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:______ too much chemical fertilizer on their farm,the farmers now have to drink polluted water. A. Having used B. Used C. To use D. Being used

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_____ too much chemical fertilizer on their farm,the farmers now have to drink polluted water.

Having used

Used

To use

Being used

Giải thích

Chọn A