Select the most appropriate option to fill in the blank.

I am planning a get together ______ Monday.

on

The most appropriate option to fill in the blank is on.

The word "on" is used to indicate a specific day of the week. In this case, the speaker is planning a get together on Monday.

The other options are not as appropriate.

• At is used to indicate a specific time of day. It does not make sense in this context, because the speaker is not planning a get together at a specific time on Monday.
• Upon is used to indicate a specific point in time. It does not make sense in this context, because the speaker is not planning a get together at a specific point in time on Monday.
• Along is used to indicate a period of time. It does not make sense in this context, because the speaker is not planning a get together for a period of time on Monday.