It was with the help of the local guide the mountain climber was rescued.
A. how
B. who
C. when
D. that
网友回答
A. how
B. who
C. when
(答案→)D. that
解析：考查强调句型。该句可还原为the mountain climber was rescued with the help of the local guide，故可知为强调句，强调状语，强调句型结构:it+be +被强调部分+that/who(指人)+其他，故选D。