单项选择题Canada comprises ______ provinces and three territories.

单项选择题In Black English people say I won't do nothing instead of I won't do anything . This is an instance of ______ dialect.

单项选择题Which of the following cities is called the cradle of American liberty

单项选择题In America, high school graduates have to take ______ in order to enter prestigious universities.

单项选择题Numerous British political leaders take pride in their being graduates of ______.