It is wide enough for two persons to walks___ tos___.
问题描述：
It is wide enough for two persons to walks___ tos___.
s开头的单词,两处应该一样的.
介词是to噢，不是by.
答
Shoulder
walk shoulder to shoulder - 两人并肩走
如果要用side的话应该是side *BY* side而不是to.