It was with the help of the local guide________ the mountain climber was rescued.
While he was investigating ways to improve the telescope, Newton made ______ discovery which completely changed ______ man’s understanding of colour.
The most important thing about cotton in history is ______part that it played in ______ Industrial Revolution.
An accident happened at ____ crossroads a few metres away from ____ bank.
— John, there is ______ Mr Wilson on the phone for you. — I’m in ______ bath.