Choose the right variant. I ___ (see) that movie last week.

Solution:

The sentence "I ___ (see) that movie last week" uses the time expression "last week," which indicates a completed action in the past. Therefore, the simple past tense is required.

1. 'was seeing' is the past continuous tense, used for ongoing actions in the past.
2. 'saw' is the simple past tense of 'see', used for completed actions in the past.
3. 'have seen' is the present perfect tense, used for actions with a connection to the present.
4. 'had seen' is the past perfect tense, used for an action that happened before another past action.

The correct option for a completed action last week is the simple past tense.

Answer: saw