1. Many houses have to be demolished to make way for the roads due to the need for progress and development, which can bring fortune to the community in terms of improved infrastructure and transportation.

2. If we don't economize on electricity, there will be power cuts. This means that if we do not use electricity efficiently and effectively, there will be a shortage of power supply leading to power cuts.

3. Although our team tried hard, we played poorly and lost the game. Despite putting in effort, the team did not achieve success in the game.

4. Last year we chose one of our gifted students to take part in the competition. This means that out of all the students, we selected one who was talented and skilled to represent us in the competition.