The river are covered with trees is very long. A. which banksB. of which banks C. whose t

问题补充：

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

答案：

A. which banks

B. of which banks

C. whose the banks

(答案→)D. the banks of which

解析：可联系答.案.网客服索取。