问题
选择题
It happened to be very cold ___ the morning of our sports meet.
A．at
B．on
C．in
D．with
答案
答案：B
在具体的某一天的早上固定接介词on。
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It happened to be very cold ___ the morning of our sports meet.
A．at
B．on
C．in
D．with
答案：B
在具体的某一天的早上固定接介词on。