5. Unluckily(luck), the delegate felt so sleepy that he soon fell asleep without realizing(realize) that he had left his passport and the draft of his speech in the taxi. 不幸的是,这位代表觉得很困很快就睡着了,并没有意识到他把自己的护照和演讲稿忘在了出租车上。 6. It is reported that ...