—Is there anything wrong, Bob? You look sad.—Oh, nothing much. In fact , I ____ of my friends back home.
The Wilsons live in ______ A-shaped house near the coast. It is ______ 17th century cottage.
When you finish reading the book, you will have______ better understanding of ______ life.
There was ______ time ______ I hated to go to school.
It is ______ world of wonders, ______ world where anything can happen.
While he was investigating ways to improve the telescope, Newton made ______ discovery which completely changed ______ man’s understanding of colour.