单选题 Do you know .* last night为什么选when he left 而不选 when did he leave
问题描述：
单选题 Do you know .* last night
为什么选when he left 而不选 when did he leave
答
when he left ;
因为know后面引导的是宾语从句,用【陈述句语序】,而when did he leave 是【疑问句语序】,不正确.