问题
选择题
The United States of America _____one of the most developed countries in the world.
A．is
B．are
C．was
D．were
答案
答案：A
搜题请搜索小程序“爱下问搜题”
The United States of America _____one of the most developed countries in the world.
A．is
B．are
C．was
D．were
答案：A