The first time for everything is always the most exciting one. _____ it is your first day in a new job or going on a first date, you will always remember those “first” times.
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.
19. They________a lot of suggestions for improving the workers’ living conditions.