Have you got the message I left with your father yesterday you’ll have an important meeting tomorrow afternoon.
A. in which
B. with whom
C. that
D. which
网友回答
A. in which
B. with whom
(答案→)C. that
D. which
解析：考查定语从句，当先行词已有定语从句修饰语时，后面引导词只能使用that，the message 后有I left with your father yesterday修饰，故选C。