Uzupełnij zdania czasownikami w odpowiednich formach

1. How long is it since you........(make) calculations of this style for the first time?
2. I wish I ......(know) how to plug it in yesterday.
3. He is expected ....(win) the Nobel Prize this year.
4. This theory....(formulate) about 100 years ago
5. They.... (carry out) an experiment right now.