Sentences that have a missing word: During his dream last night Herbie imagined he was able to fly and jumped off the roof, flying around his hometown. He awoke in his bed, and clearly had not moved all night. Why didn’t he try to fly with his body if his brain was so active? a. Herbie’s circadian rhythms kept him asleepb. Dreams happen during light sleep, when we are relaxedc. Herbie was dreaming during REM sleepd. Herbie does not experience sleep walking, and therefore has an abnormal sleep cycle