They would not allow him across the enemy line.
A. to risk going
B. risking to going
C. for risk to go
D. risk going
网友回答
(答案→)A. to risk going
B. risking to going
C. for risk to go
D. risk going
解析：考查短语：allow sb to do sth允许某人做某事，risk doing冒险做某事。句意：他们不允许他冒险穿过敌人的防线。所以选A。