help me Make up special questions .
1. The children are are sleeping . ( What ... )
2. The city was completely destroyed . ( How ... )
3. The total duration of the earthquake was ten seconds . ( How long ... )
4. We have a meeting before the holiday . ( What ... )

1. The children are are sleeping.

( What are the children doing?)

2. The city was completely destroyed . ( How was the city destroyed?)

3. The total duration of the earthquake was ten seconds.

( How long was the total duration of the earthquake?)

4. We have a meeting before the holiday .

( What does we/you have before the holiday?)