Question

B. Rewrite these sentences with at least one verb in the future perfect tense. Make
the necessary changes. One has been done for you.
1. I finished cooking by 9 a.m.
I will have finished cooking by 9 a.m. tomorrow.
2.
I shall return by next week.
3. They will spend all their energy by then.
4.
I shall complete my work before Christmas.
5.
The concert will begin when you reach the hall.​

Answer 1

Answer:

I shall have returned by next week

they will have spent all their energy by then

I shall have completed my work before Christmas

the concert will have begun when you reach the hall

Explanation:

hope it helps you !