1. I surmise Tiffany will be arriving late . Her car is stuck in a traffic jam.
2. I guess Tiffany would have to arrive late . Her car is stuck in a traffic jam.
3. Come quick! Otherwise by the time we get to the office, they will have finished the party.
4. You’d better not call Mathew this week. I bet he will be working for the whole week!
5. I anticipate Anna will be needing a rest when she arrives tomorrow. She will have been traveling for over 20 hours on a plane.
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