1. ''We don't open the laboratory today.'' Peter said to his colleague.

--> Peter asked his colleague not to open the laboratory that day.

2.'' Will the Earth ever be visited by aliens?'' Phong said to Dr. Nelson.

--> Phong asked Dr. Nelson if the Earth would ever be visited by aliens.

3. ''How abd when was the universe created?'' Tom asked the presenter.

--> Tom asked the presenter how abd when the universe had been created.

4. ''Have you ever looked through a telescope?'' I asked John.

--> I asked John if he had ever looked through a telescope.