题干
What _______ useful storybook! And _______ book is popular with teenagers.
A：a; a
B：an; a
C：the; the
D：a; the
答案(点此获取答案解析）
D
What _______ useful storybook! And _______ book is popular with teenagers.
A：a; a
B：an; a
C：the; the
D：a; the
