"For" is the wrong preposition. It makes no sense. Five and six are correct.
https://www.merriam-webster.com/dictionary/for
1. He finished the project for five days.
2. He has finished the project for five days.
3. He read the book for five days.
4. He has read the book for five days.
[Are the four sentences all grammatical?}
5. He read the book in five days.
6. He finished reading the book in five days.
[What is the difference between #4 and #5? Does #5 mean #6?]
1 answer