问题补充：
—Could you tell me ?
—About three hours.
A. how long does the meeting last
B. how long will the meeting last
C. how long the meeting last
D. how long the meeting will last
答案：
A. how long does the meeting last
B. how long will the meeting last
C. how long the meeting last
(答案→)D. how long the meeting will last
解析：考查宾语从句。Could you tell me…?是委婉的请求，不是过去时态；宾语从句的语序是“引导词+主语+谓语+其他”
