The river, ____ are covered with trees, is very long.
A. which banks B. of which banks
C. whose the banks D. the banks of which
The river, ____ are covered with trees, is very long.
A. which banks B. of which banks
C. whose the banks D. the banks of which
D
名词/代词+of+whom/which可引导非限制性定语从句,表示部分与整体的关系。C项应为whose banks。