He's in a bad mood.

Source: Tatoeba

Tom felt his heart beating faster.

Source: Tatoeba

When he feels fine, he goes for a walk.

Source: Tatoeba

He'll never show it, but I think that deep down, he's seriously worried.

Source: Tatoeba

He's absent-minded.

Source: Tatoeba

His heart stopped beating and he died immediately.

Source: Tatoeba

He thought to himself, "No!" Aloud he said, "Yes."

Source: Tatoeba