答案是: 1.the film has been on for ten minutes 2. it's ten minutes since the film began 3.the film began ten minutes ago 4.ten minutes has passed ince the film began 1.they went to Guang zhou half a month ago 2.they have been in Guangzhou for half a month 3.it's half a month since they came to Guangzhou ~手工翻译,尊重劳动,欢迎提问,感谢采纳!~