—Could you tell us how long ?—About three days. A. does the sports meeting lastB. the spo

问题补充：

—Could you tell us how long ?

—About three days.

A. does the sports meeting last

B. the sports meeting last

C. will the sports meeting last

D. the sports meeting will last

答案：

A. does the sports meeting last

B. the sports meeting last

C. will the sports meeting last

(答案→)D. the sports meeting will last

解析：宾语从句要保持陈述语序B项主语为单数谓语要用单数，如果是一般现在是的话。因此选D。