这家人穿着19世纪的服装合影留念。

This family is ___posing in 19th-century clothing.

她假装是医生，但其实只是个学生。

She ___posed as a doctor, but was actually just a student.

记者在新闻发布会上提出了一个关于经济政策的问题。

The journalist ___posed a question about economic policy at the press conference.

这次暴风雪给城市的交通系统带来了很大麻烦。

The snowstorm ___posed a major problem for the city's transportation system.