听第9段材料,回答第14至17题 1. When is Mary's birthday? A. On April 12th B. On April 13th C. On April 14th 2. What will the two speakers buy for advice? A. Books B. Film tickets C. Concert tickets 3. Whom will the woman ask for advice? A. Nancy B. David C. Mary 4. Where will the two speakers meet after class? A. At the library B. In the dining room C. In Mary's room