My boyfriend gave me a gift.

Everyone was surprised by the news.

He has a very passive personality.

Depolarization plays an important role in the activity of nerve cells.

In this area, they desalinate seawater to make it drinkable.

This water needs to be desalted.

In this lake, denitrification is actively taking place.

This soil is active in denitrification, releasing nitrogen into the atmosphere.

He succeeded in escaping from jail last night.

He escaped from prison last night.