the tower building where you can see the whole cityA. Standing on the top ofB. If you cli

问题补充：

the tower building，where you can see the whole city

A. Standing on the top of

B. If you climb to

C. When you reach the top of

D. Get to the top of

答案：

A. Standing on the top of

B. If you climb to

C. When you reach the top of

(答案→)D. Get to the top of

解析：句意：到达塔顶，在那里你就能看见整个城市。这里逗号后是句子，已经有连词，所以空格处不能再用连词，故排除BC；又因为逗号后是从句，所以逗号前必须是主句，故选D。