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。