Besides dogs horse has had the closest relationship with man.A. the; theB. /; /C. a; /D

问题补充：

Besides dogs, horse has had the closest relationship with man.

A. the; the

B. /; /

C. a; /

D. the; /

答案：

A. the; the

B. /; /

C. a; /

(答案→)D. the; /

解析：可联系答.案.网客服索取。