你可以从书架上选择任意一本书。

You can choose ___either book from the shelf.

"你更喜欢哪个颜色，蓝色还是绿色？" "我都可以。"

"Which colour do you prefer, blue or green?" "___Either is fine with me."

就选你喜欢的任何一个选项吧。

Just pick ___either option you prefer.