The National Day of the United States falls on________.……

单项选择题The exponent of the concept communicative competence is________.

单项选择题The head of the ruling party and that of the Opposition party in Britain are called________. respectively.

单项选择题________, who were French-speaking, achieved the final unification of England.

单项选择题The Immediate Constituent Analysis is an approach typical of________.

单项选择题The Scarlet Letter was written by________.