Choose the best word from the choices to complete the sentence.
1. We went on a school trip to Kyoto, (which/ where / when) we enjoyed
visiting old temples and shrines.
2. In 1945, (which / where / when) World War II ended, my grandfather moved
to Osaka and started a new business.
3. The thing is (what / whether / which) we have enough time to finish the
work before Friday.