题文
The accident happened ________ a cold morning but luckily， no one was injured．（ ）
| A． |
at |
B． |
on |
C． |
in |
The accident happened ________ a cold morning but luckily， no one was injured．（ ）
| A． |
at |
B． |
on |
C． |
in |
试题篮
()
粤公网安备 44130202000953号
