题目内容：

The man didn't know___.A.when did Mr Wang leave for Tianjing.B.when Mr Wang left for Tianjing C.whether Mr Wang leaves for TianJing ,D.why she is late for school

优质解答

B
这是个复合句,主句：The man didn't know
宾语从句：当主句是一般过去时,从句一般也用过去,排除C,D
宾语从句的语序是陈述,即主语+ 谓语,排除A,特殊疑问句语序
翻译：那个人不知道王先生什么时候起程去天津