Question

we are going to see my parents ........... this weekend . at or on

Answer 1

at must be used in this line

Answer 2

We are going to see my parents on this weekend.

• The words or phrases used before a noun or pronoun to show or describe some time, place, direction etc called prepositions.
• On, at, in, for are prepositions
• In this sentence on will the perfect word.
• Thus the sentence is "we are going to see my parents on this weekend".