Chuyên đề 9: Hình thức phân từ
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:__________ trees around the house on the south and west sides,they can save up to about $250 a year on cooling and heating. A. Having planted B. Being planted C. To plant D. To have planted

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__________ trees around the house on the south and west sides,they can save up to about $250 a year on cooling and heating.

Having planted

Being planted

To plant

To have planted

Giải thích

Chọn A