Complete the sentences using the answers or the verbs in the brackets. You have to decide where to use the future perfect or the future perfect continuous.
1. by Tuesday? (she / return)
Yes, she'll have returned by Tuesday.
2. How long the mountain this time tomorrow? (John / be / descend)
John will have been descending the mountain for 48 hours.
3. How long does it take you to rewrite such a book?
Tomorrow I on it for three years. (be / work)
4. Will Tom be ready for the test on Wednesday?
He for a couple of weeks, so I guess he will. (be / prepare)