invited, I won’t go traveling with them because I’m busy these days..
A. Apart from
B. In spite of
C. Even if
D. Only if
网友回答
A. Apart from
B. In spite of
(答案→)C. Even if
D. Only if
解析：连词介词辨析。A除…之外；B尽管，不管；C即使；D只要；CD两项省略连词，后面要接句子。AB两项后面要接短语或者名词。句意：即使被邀请我也不去旅游，因为我这些日子很忙。故Ｃ正确。