3 By the time the firefighters arrived, the block of flats had already gone up at/in flames. 4 Why on/by earth didn't you tell me that before? 5 The 1908 earthquake in Italy left the town of Messina with/in ruins.

1. By the time the firefighters arrived, the block of flats had already gone up in flames.
2. Why on earth didn't you tell me that before?
3. The 1908 earthquake in Italy left the town of Messina in ruins.

Ответ: смотри решение выше