第三节 语法和词汇知识(共15小题；每小题1分，满分15分)
11. —We’re going for a picnic next Sunday. Why not join us?
—_______ I have to see my grandmother. She has been ill for two weeks.
A. What a pity! B. Good luck.
C. That’s all right. D. Go ahead.
12. (2012·北京模拟)The 2012 London Book Fair opened a window for foreigners to have _______ closer look at Chinese culture through _______ books.
A. the; 不填 B. the; the
C. a; 不填 D. a; the
