Правильный вариант - это I will be celebrating.
Объяснение:
Нужен вспомогательный глагол.В данном предложении им выступает be.
I play football every weekend
He doesn't read books
Do you eat your breakfast?Yes,I do /No,I don't
We didn't meet Jim, we met Max. He didn't leave last Tuesday, he left last Thursday. We didn't see Jack, we saw David. They didn't buy a Volvo, they bought a Fiat. You didn't know the answer, Tom knew the answer. I didn't lose my passport, I lost my ticket. He didn't write a letter, he wrote a postcard. The film didn't begin at 6:30 p.m., it began at 7:30 p.m. My sister wasn't at the theatre yesterday, she was at disco.
We met him at the airport мы встретили его в аэропорту..........................................
1) Henry said that his son was a student.
2) Her mother said that she was working at the library.
3) My friend told me that he hadn't seen me for ages.
4) All said that he should solve the clues the next day.
5) He said there was nobody there to stop them.
6) The soldier said that they would find a place to lie up and added he was afraid they would kill them.
7) My friend told me that they had been waiting for me for ten minutes.
8) Jane said that she was all allright and nothing worried her.
9) Tom said he was busy then and he was doing his lessons.
10) The secretary told us that she wasn't there because she had just left the office.