问题
单项选择题
Many important officers were ______ in that case.
A．included
B．involved
C．contained
D．revolved
答案
参考答案：B
解析： involve意为“牵涉，卷入”(sb. is involved in sth.)；include意为“包括”；contain意为“包含”；revolve意为“旋转”。
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