.Has the Channel Tunnel improved the _______of goods between the British Isles and mainland Europe?

Has the Channel Tunnel improved the _______of goods between the British Isles and mainland Europe?

--- Can you shoot that bird at the top of the tree?--- No, it's out of ____.

Due to the violent nuclear leakage, the _____ of the electricity supplies put Japan’s northeastern cities in a sate of chaos.

In order to attract more customers, many supermarkets usually sell their goods at a good________ at weekends.