1. By the time the firefighters____arrived_____ (arrive), the fire_____has already destroied____ (already destroy) over 50 hectares of pine forests.

2. Two people_____reported____ (report) that flames______trapped___ (trap) them inside a smoke-filled apartment.

3. It_____rained____ (rain) all morning before the tornado_____has touched____ (touch) down.

4. They____didn't know_____ (not know) where to shelter from the storm because nobody___told____ (tell) them.

5. ___Have you already left______ (you/ already leave) the office when the fire_____started____ (start)?

6. The post_____wasn't arriving____ (not arrive) when I____left_____ (leave) home this morning.

7. It____has been_____ (be) cloudy for days before it_____started____ (start) to rain heavily and____flooded_____ (flood) the whole City.

8. When I_____got____ (get) to the check-in desk, I realized I____left_____ (leave) my ticket at home