第一节 单项选择(共10小题。每小题1分,计10分)
从每小题所给的A、B、C、D四个选项中选出可以填入空白处的最佳答案。
21. What useful book! And book is popular with students.
A. a; a B. an; a C. the; the D. a; the
22. — Can I help you?
—I’d like a cup of coffee milk it, please.
A. at; in B. with; in C. with; on D. at; on