【正确答案】For instance, we are enjoying our holidays at a famous scenic spot, when our boss's phone call arrives, saying that we have had some troubles with our customers or work…
【答案解析】本篇为论述文，前两句论述“匆忙”与“休闲”的生活方式和人们生活方式的选择，最后一句举出实例。这种情况下，全篇都可以采用现在时，而最后一句的举例采用一般过去时也可以接受。