试题题干
In 1931 by （ ） Canada was formally declared to be a sovereign nation and become a member of the Commonwealth of Nations.
参考答案
正确答案：
试题解析
1931年，加拿大在《西敏法案》正式宣布成为一个主权国家，并成为英联邦成员国。
In 1931 by （ ） Canada was formally declared to be a sovereign nation and become a member of the Commonwealth of Nations.
1931年，加拿大在《西敏法案》正式宣布成为一个主权国家，并成为英联邦成员国。