But These very little two-letter prepositions appear to be to build confusion. Here are some regulations that will help you have an understanding of when to implement in, on, and at within a sentence. （表达或书写的方式）用，以 Cheques must be created in ink. 支票要用墨水笔填写。 Tutorials, references, and examples are consistently reviewed to http://139.59.255.83/