We're going to build a/an ... to our house over the garage. It will house a bedroom and an additional bathroom. 

He was just 25 years old when he was ... for the chairman of the board of the club, though on the occasion, he was unsuccessful. 

The ... reason for the shortage of doctors and nurses working for the National Health Service is the long working hours.

The Normans ... Britain in 1066 by defeating King Harold. 

The porters had no equipment or protective clothing but they had one thing that proved ... in the end: local knowledge of the mountain paths.

The main ... of her moving to a smaller house is that there won't be so much housework and repairs to do.