Read the sentences and choose the correct variant.
1. I would like to know if you could make it ____ tomorrow.
2. It didn't happen yesterday but the day ____ yesterday.
3. We wanted to hide ____ a big storm. He didn't want to get wet.
4. You must check the petrol ____ regular intervals.
5. I was _____ Peter's last night.
6. It was a very long voyage. We were _____ sea for 50 days.