The river the banks are covered with trees is very long.A. whoseB. whichC. of whichD. wh

问题补充：

The river, the banks are covered with trees，is very long.

A. whose

B. which

C. of which

D. which of

答案：

A. whose

B. which

(答案→)C. of which

D. which of

解析：本题考查定语从句。whose banks＝of which the banks＝the banks of which。