he returns to his native land.
A. It is long before since
B. It is before long that
C. It won’t be long before
D. It will be long after
网友回答
A. It is long before since
B. It is before long that
(答案→)C. It won’t be long before
D. It will be long after
解析：考查固定句型：It won’t be long before….，要不了多久就会…，句意：要不了多久他就会回到祖国。选C。