1. By 8 o'clock we (cook) will have cooked breakfast. Ans: will have cooked

2. They (eat) will have eaten by then. Ans: will have eaten

3. In one week he (cross) will have crossed the Atlantic by boat. Ans: will have crossed

4. She (go) will have gone home. Ans: will have gone

5. Kathy (not / finish) will not have finished her work by five o’clock. Ans: will not have finished

6. James (not / return) will not have returned from his business trip by Monday. Ans: will not have returned

7. The sun (not / rise) will not have risen by 5 o'clock. Ans: will not have risen

8. (finish / you) will you have finished washing your hair by six o'clock? Ans: will you have finished

9. Our boss (not / leave) will not have left (drive / she) the office yet. Ans: will not have left

10. (decorate / she) will she have decorated (drive / she) the new house by then? Ans: will she have decorated