there will probably be cities in space.
people used to shop at small grocery stores.
people work more than 40 hours a week.
Before the automobile,...
About 60 years ago,...
Sometime in the near future,...
In most offices these days,...
doctors might find a cure for the common cold.
many TV shows were in black and white.
pollution is becoming a serious problem.
Before there were supermarkets,...
students are learning with interactive whiteboards.
In many cities nowadays,...
In many classrooms today,...
In the next 100 years,...
people didn't travel as much from city to city.
