Her results of final year examination surprised the teachers.

اس کے آخری سال کے امتحان کے نتائج نے اساتذہ کو حیران کر دیا۔

The teachers were surprised at his result of final year examination

The teachers are surprised at his result of final year examination

The teachers will be surprised at his result of final year examination

The teachers should be surprised at his result of final year examination

All of the above

The given sentence is in Past Indefinite Tense.

Active voice structure: Subject + past tense form of the verb + object (Her results of final year examination surprised the teachers)

Passive voice structure: Object of the active sentence + was/were + past participle form of the verb + by + subject of the active sentence

(The teachers were surprised at his result of final year examination)