He arrived on the day ______ there happe
题型：选择题
问题：
He arrived on the day ______ there happened to be no plane tickets left for Shanghai.
[ ]
A. on which
B. for which
C. with which
D. by which
He arrived on the day ______ there happened to be no plane tickets left for Shanghai.
[ ]
A. on which
B. for which
C. with which
D. by which