The exam was so severe that I couldn't answer at all.

I was surprised by his severe criticism.

That game was truly a miracle play.

He is suffering from acute leukemia.

This train is extremely congested, there is absolutely no space to move.

This math problem is extremely difficult.

His speech was of fiery passion, captivating the audience.

This cake is so extremely sweet that I can't eat it.

He suddenly issued a declaration of his intention to marry.

Ebola virus disease is highly infectious and can cause severe symptoms.