In the early days of the American West, life was difficult. People lived on farms away from other families.
Then, what did families do to build houses?
Why don’t we work with others? It can be fun and life can become easier, too.
“Thank you” is widely used in modern society. It is a very good manner
“Excuse me” is another polite expression.
In fact,
3 . The job of a scientist is to find out the truth in the field of science.
My next door neighbour is a scientist. He studies radiation.