问题
选择题
_________ walk is expected to last all day, so bring __________ packed lunch.
A．A; a
B．The; 不填
C．The; a
D．A; 不填
答案
答案：C
第一空填空定冠词，表特指; 第二空填不定冠词，是因为lunch前带有描给性修饰语，a packed lunch在此指“打包的午餐”。此句出自《D7-2005年版》的lunch词条：The walk is expected to last all day so bring a packed lunch.