In the forest we observed some trees ____the leaves were black with disease.
A. where B. of which C. in which D. whose
In the forest we observed some trees ____the leaves were black with disease.
A. where B. of which C. in which D. whose
B
定语从句，先行词和leaves关系为所属关系，D项应该直接用在名词前，不能在名词前用冠词。