问题
选择题
The president of the USA around the Palace Museum last month.
A．has showed
B．showed
C．was showed
D．has been showed
答案
答案：C
题目分析：句意：美国总统上个月被带领参观了故宫。Show around“带领…参观”，show和主语The president of the USA是被动关系，因此要用被动语态。时间状语是last month，因此要用一般过去时。故选C。