Question

I........ him last Sunday.
(Use past / past participle form of see)​

Answer 1

I saw him last Sunday.

Explanation:

• The past tense is used to narrate an already happened action in a time before now.

• The time of the action happened can be in near past or distant past, but it does not matter how long the action lasted.

• The simple past tense is different than past continuous tense.  

• The correct form of the verb must be used to show the tense of the sentence.

• Since we are asked to add the past participle for "see", so we will add "saw".

Answer 2

Correct verb:

I saw him last Sunday.

Explanation:

• The word is verb in this sentence which defines the action of the subject.
• The verb is used in three tenses namely past, present and future.
• The meaning of verb see is discern visually. The gerund form of see is seeing, 3rd person present is sees and past participle form is seen.
• The "last Sunday" in the sentence means that the action took place in the past time.