There are many islands the southeast coast of China.A. toB. onC. inD. off

问题补充：

There are many islands the southeast coast of China.

A. to

B. on

C. in

D. off

答案：

A. to

B. on

C. in

(答案→)D. off

解析：考查介词的用法。沿着海岸coast，常与介词off 连用，句意：有许多的岛屿在中国的西南海岸。所以选D。