16. — ______ National Day holiday is coming. What’s your plan?
— None. Just stay at home and have ______ good rest.
A. The; 不填 B. 不填; a C. The; a D. 不填; 不填
17. — Could you tell me who the ruler of the USA in the 17th century was?
— Sorry. I have little ______ of American history.
A. background B. knowledge C. confidence D. advice