The last few years many natural disasters around the world from drought to earthquake.A

问题补充：

The last few years many natural disasters around the world, from drought to earthquake.

A. see

B. are seeing

C. have seen

D. saw

答案：

A. see

B. are seeing

(答案→)C. have seen

D. saw

解析：句意：最后的几年见证了世界各地的许多自然灾难，从干旱到地震。根据时间The last few years 从过去到现在几年，故用现在完成时态选C。