Respuesta:
Hola.
1. the fire HAD ALREADY REACHED (already/reach) the roof by the time the firemen arrived.
2. Joe smith went to prison because he HAD STOLEN (steal) a lot of money.
3. Helen went to bed after she HAD WATCHED (watch) her favorite TV program.
4. my father bought the new car after he HAD TRIED (try) it a few times.
5. By the time Sonia got to the party, everyone HAD BEGUN (begin) dancing.
6. Lorenzo HAD EATEN (eat) all the ice cream before I opened the fridge.
7. There was a lot of snow outside because it HAD SNOWN (snow) earlier in that day.
8. Beatriz didn’t pass the test because she HAD NOT STUDIED (not study) at all.
9. Look! Somebody HAD LEFT (leave) the windows open.
10. By the time the police arrived, the burglar HAD BROKEN (break) into my neighbor's house.
