It is good manners for foreigners ________ to show the honesty while talking.

A.to look into each other's eyes

B.looking into each other's eyes

C.to look to each other's eyes

D.to look for each other's eyes

答案及解析： A

解析：

导解：look into one's eyes是动词短语，意为“看着别人的眼睛”．