After suffering a heart attack, Michael Jackson was pronounced dead, ____ a tragic end to the world' s most popular entertainer.
24. Mary wanted to travel around the world, but her parents didn’t_______her to do so.
23. The way the guests_____in the hotel influenced their evaluation(评价) of the service.
22. He demanded that such things_____ from happening again.
21._____by a desire to learn, he was not interested in children’s play and adventure when he was young.
20. The flu is believed________by viruses.