【题目】The class teacher was anxious to hear one of his top students _____ because of family move．
A． will leave B． is leaving
C． was leaving D． has left
在线课程【答案】C
【解析】be doing可以用来表示将来，指按照时间安排表即将发生的事情，是有计划安排的；will do强调的是主观性，不表达按时间安排表即将发生的事情。句意：得知班里一个尖子生因为家庭原因要离开学校，班主任很焦虑。