Everyone was surprised by the news.

There is a planned blackout tonight, so please come home early.

He is systematically advancing his work.

We will hold a meeting to make a new business plan.

Tomorrow's flight has been cancelled as planned.

Tomorrow's flight has been cancelled as planned.

He likes to take a walk in the park at dusk.

Linear programming is a part of operations research and is used to find the optimal solution.

Paying the urban planning tax is a citizen's duty.

The United Nations Environment Programme is providing solutions to global environmental problems.