the students were listening carefully( )into the classroomA.when Tom rushed B.when Tom was rushingC.while Tom rushed D.while Tom was rushing

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the students were listening carefully( )into the classroom
A.when Tom rushed B.when Tom was rushing
C.while Tom rushed D.while Tom was rushing

选 A when 后面接瞬间动作,while 后面接持续性动作,冲进来是一个瞬间动作 所以选A

A be doing ...when 正在做某事……突然

A,要是对的话,再解释