Gradually the road climbs among high mountains and through a dark forest（ ）huge trees shut out the light with their thick towering leaves.
A、whose
B、what
C、which
D、that
【正确答案】：A
【题目解析】：关系分句考察，先行词为：forest,且分句huge trees shut out the light...缺少定语，故用关系词whose作huge tree 的定语，相当于 the forest's huge trees shut out.
