题干
MH 370 which held 239 people disappeared_________ the early morning of March 8th , 2014 .
A：on
B：in
C：at
答案(点此获取答案解析）
A
MH 370 which held 239 people disappeared_________ the early morning of March 8th , 2014 .
A：on
B：in
C：at
