那位病人声称自己看到了房间里不存在的人，医生认为他在幻觉。

The patient insisted he saw people in the room who weren't there, and the doctor suspected he was ___hallucinating.

他在发烧时产生了幻觉，以为自己看到天花板上爬满了蜘蛛。

When he had a fever, he ___hallucinated spiders crawling all over the ceiling.

高烧使得她开始产生幻觉，看到房间里飘着彩色的光点。

The high fever made her ___hallucinate colorful dots floating in the room.