There is no need to leave a tip in Canada. Service in the bill.
A. included
B. is included
C. includes
D. was included
网友回答
A. included
(答案→)B. is included
C. includes
D. was included
解析：句意：在加拿大没有必要留下小费。服务被包含在账单里面。这里的service和include是被动关系，而且讲的是客观事实，所以用一般现在时的被动，选B。