Mr. Li is kind _________ us.  But sometimes he is kind _______  serious.

A．to , of

B．with, to

C．of , to

D．to, with

某个推广账户中只有一个推广计划，推广账户中设置的投放地域为“北京”，推广计划设置的地域为“上海”，则账户关键词的实际投放地是“是海”