问题
选择题
______ the beginning of the meeting, we heard a report by Mr Li.
A．By
B．In
C．At
D．On
答案
答案：C
at the beginning of 在…之初。
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______ the beginning of the meeting, we heard a report by Mr Li.
A．By
B．In
C．At
D．On
答案：C
at the beginning of 在…之初。