Present tense.
The present tense of "belong" is "belong." For example, "I belong to this group."
The past tense of "belong" would be "belonged".
The past tense of "belong" is "belonged."
The past tense of "belong" is "belonged."
Past: I/you/etc belonged, present: I/you/etc belong, future: I/you/etc will belong
belong
past tense
Parts of Speech.
"Payment" is a noun, it doesn't have tenses.
Was is a verb. It is a past tense singular be verb.
The word "saw" can be both a verb (past tense of see) and a noun (a tool used for cutting).
"Kept" is a past tense verb and is considered a transitive verb because it requires an object to complete its meaning.