问题
选择题
Mr. King didn’t know __________ yesterday evening.
A．when does his son came home
B．when his son comes home
C．when his son came home
D．when did his son come home
答案
答案：C
考查宾语从句。宾语从句的主句谓语动词是过去式，从句应用过去的某种时态，从句应用陈述语序，故答案为C。