Travelers that they should bring their ID cards with them.
A. have reminded
B. are reminded
C. were reminding
D. had been reminded
网友回答
A. have reminded
(答案→)B. are reminded
C. were reminding
D. had been reminded
解析：考查语态及时态。句意：旅客们被题型他们应该带上他们的身份证。可知本句描述的是客观的事实，旅客为动作对象。故用一般现在时态，被动语态，选B。