问题
选择题
—Do you know Tom came _____ third in the marathon held yesterday?
—Yeah！And it was _____ 18-hour bicycle marathon.
A．不填; the
B．the; 不填
C．不填; an
D．the; a
答案
答案：C
考查冠词第一空不填，因为third这里是副词，come third获得第三名，第二空填an，指一次18小时的自行车马拉松，因为eighteen是元音开头的单词，用an。选C。