问题描述：
--Tom can't keep his mind on his work recently.
--It's understandable.His friend's death is a great ____to him.
A.harm B.loss
但是学生都是选A 解释起来很困难,有没有能解释清楚的,
--It's understandable.His friend's death is a great ____to him.
A.harm B.loss
但是学生都是选A 解释起来很困难,有没有能解释清楚的,
问题解答：
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