--- 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 |
--- 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 |