问题
单项选择题
One day while Mr. King was working, he had a/an（）：his left leg was badly injured.
A.business
B.accident
C.matter
D.event
答案
参考答案：B
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One day while Mr. King was working, he had a/an（）：his left leg was badly injured.
A.business
B.accident
C.matter
D.event
参考答案：B
