English is understood all over the world Turkey is spoken by only a few people outside Tu

问题补充：

English is understood all over the world Turkey is spoken by only a few people outside Turkey itself.

A. while

B. when

C. if

D. as

答案：

(答案→)A. while

B. when

C. if

D. as

解析：因为句中的并列连词while表示“对比或相反”。