The owner of the mine was to twenty years because he had broken the law to employ children as miners.
A. sentenced
B. trapped
C. sheltered
D. buried
网友回答
(答案→)A. sentenced
B. trapped
C. sheltered
D. buried
解析：sentence sb to判决，宣判；be buried in专心于。句意：因为矿主违反了法律制度雇佣未成年人做工，而被判20年的监禁。根据句意故选A。