Ⅰ. 单项选择
1. What _____ useful storybook! And _____ book is popular with teenagers.
A. a; a B. an; a C. a; the
2. —Excuse me. Is this _____ bike, Alice?
—No, it’s not_____ .
A. yours; mine B. your; mine C. your; my
3. There are three _____ assistants in the _____ shop.
A. women; shoe B. woman; shoe C. woman; shoes
