1. This animal species will (have) become extinct by the middle of the century, if we (do not take any measures now.
2. Your coat (will have worn out) by the next season. It's better (to buy) a new one.
3. It (had been snowing) heavily for 3 days, and the roads in the mountains were blocked.
4. The young man led him towards the elevator without saying a word. It took them to the seventh floor where Mark (was escorted) and (asked) to wait.
5. Don't trust your opponents. They (will be criticizing) you non-stop until life itself (proves) you are right.
6. "Why did nobody tell me?' Adele was rigid, squeezing her handbag under her arm. 'Your father should (have told) me!
7. How long have you (been waiting)? - Half an hour. And how long did you (wait) yesterday? Only two minutes!
8. He'll take a picture of you when you are being given the prize.
9. The result was absolutely different from what we (had expected), and we nearly (gave up the experiment, but soon Tom (found) where we (had made) a mistake.
10. I have been waiting) for Frank's call since 3 o'clock, but he (has not called) so far.
When is the scene taking place (morning, night, summer, winter, etc.)