what you can do is ____(show) your respect to him.我觉得是showing 或者 to show 答案竟然给的是show 求教导

题目

what you can do is ____(show) your respect to him.我觉得是showing 或者 to show 答案竟然给的是show 求教导

答案

is to show有表达将来时的意思,而is showing 仅表达一个动作.
What you can do is to show your respect to him.
你所能做的是要对他表示你的尊重.（该做而未做的事）