I will give a presentation at the conference.

Preservation of the environment is crucial for future generations.

It is important to preserve our natural resources for future generations.

The president of the United States is the head of state and the head of government.

There used to be no freedom of the press.

She pressed the button to start the machine.

The previous owner of the house left behind some furniture.

The priest performed the wedding ceremony.

She is primarily responsible for the project.

I used to walk to primary school every day.