lm giùm m vs ak ----- Nội dung ảnh ----- 1. If beaches __________ clean, fewer people __________ them. 2. What __________ if we __________ nothing to reduce pollution? 3. If they __________ throwing trash into the river, many fish __________. 4. We __________ wildlife if we __________ air pollution. 5. If people __________ to pollute the land, plants and trees __________.
