【答案】Until then, his family ______ from him for six months.

题目：
Until then, his family ______ from him for six months. A.didn' t hear B.hasn' t been hearing C.hasn' t heard D.hadn' t heard   答案：D 解析：本题考查时态。题干中有时间状语until then提示时要用过去完成时态，表示过去已经发生的事情。