Zhaozhou Bridge is one of stone bridges in the world.( )
A.oldB.olderC.oldestD.the oldest
The river is too wide for the swimmers _______________.
I am happy with my old friends today.
The policeman asked us _____him send the old man to the hospital.
()If there _____ no buying and selling of animals, there will be no killing in nature.
In summer milk will quickly go bad_____ it is put into a fridge.