IF ALL THE TREES IN THE REGION WERE CUT DOWN ,EROSION

6. - 3 DE KIEM TRA HOC KY II MON ANH HOC KY II THAM KHAOVA DAP AN
Tiếng Anh 3 DE KIEM TRA HOC KY II MON ANH HOC KY II THAM KHAOVA DAP AN

6. If all the trees in the region were cut down ,erosion ...

A. will happen B. happened C. is happening D. would happen