He received an official notice.

We achieved our goal and achieved success.

This chemical reaction is very dangerous.

This chemical reacts when heat is added.

The reconfiguration of the computer system is necessary.

The Supreme Court issued a verdict on the case.

This system needs reconfiguration.

He reconstructed the broken house.

Insects have an exoskeleton, which protects their body.

They called for a boycott in opposition to the inappropriate actions of the company.