试题详情
—Red-crowned cranes need more people's help．
—Yes, people working in the reserves are doing everything they can ______ these birds．
- A、save
- B、saving
- C、to save
- D、to saving
知识点
参考答案
采纳过本试题的试卷
—Yes, people working in the reserves are doing everything they can ______ these birds．