When Anna _____ the room, a group of young men were talking eagerly round the table.
When Anna _____ the room, a group of young men were talking eagerly round the table.
A、enters
B、has entered
C、was entering
D、entered
【正确答案】：D
【题目解析】：由when 引导的从句，根据后面的were talking 判断前面为过去式，由于enter是瞬间动词，因此不使用be doing 形式，因此选D.
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