Prepositions for Writing Medium

When discussing the medium used for writing, such as ink, pencil, or crayon, the appropriate preposition to use is "in". This indicates that the writing is being done using that specific substance or style.

• For example, "Please write in ink." This means the writing will be done using ink.
• Another example is "The document was written in pencil."

It's important to differentiate this from using a tool. If you were referring to the tool itself, you would use "with" (e.g., "Write with a pen" or "Write with a pencil"). However, for the substance or form, "in" is correct.

Placing Name on Page

When specifying a precise location or point on a page, like the very top, bottom, or side, the preposition "at" is typically used. This preposition helps to pinpoint an exact position.

• For instance, "Please put your name at the top of the page." Here, "at the top" refers to the specific uppermost section of the page.
• Similarly, we say "The page number is at the bottom of the document."

While "on" can also indicate position on a surface, "at" is more common and idiomatic for referring to specific points or areas on a document, such as "at the top", "at the bottom", "at the beginning", or "at the end".

Complete Sentence Analysis

Let's combine the correct prepositions for both blanks in the given sentence:

1. For "Please write ______ ink", the correct preposition is "in", as it denotes the medium of writing. So, "Please write in ink".
2. For "put your name ______ the top of the page", the correct preposition is "at", as it refers to a specific location on the page. So, "put your name at the top of the page".

Therefore, the complete and grammatically correct sentence is: "Please write in ink and put your name at the top of the page."

This matches the option stating "in, at".