The sailor is of his experiences because he has been to about30 countries.A. the prideB.

问题补充：

The sailor is of his experiences,because he has been to about30 countries.

A. the pride

B. afraid

C. proud

D. pride

答案：

A. the pride

B. afraid

(答案→)C. proud

D. pride

解析：the pride和of搭配使用,特指某人的骄傲;afraid害怕；proud和of搭配使用，表示为……自豪；pride名词，骄傲，自豪。句意：这个水手为他的经历感到自豪，因为他去过大约30个国家。故选C。