1. This traffic is terrible. We’re going to be late. By the time, we get to the airport, Bob's plane will have already arrived.
How about "By the time we
have got to the airport, instead of "got to the airport"?
2. The traffic was very heavy. By the time we got to the airport, Bob’s plane will have already arrived.
How about "By the time we
had got to the airport", instead of "got to the airport"?
3. I don’t understand how those marathon runners do it! The race began more than an hour ago. By the time they reach the finish line, they (run)
_________ steadily for more than two hours. I don’t think I can run more than two minutes!
In this question, the book says that the correct answer is "will have been running". But how about "have been running"?