---Have you heard of Kunming terrorist a
问题:
---Have you heard of Kunming terrorist attack?
---Yes, it happened ________ March 1st, 2014.
A.on
B.in
C.at
D.for
---Have you heard of Kunming terrorist attack?
---Yes, it happened ________ March 1st, 2014.
A.on
B.in
C.at
D.for