Definition: If something is on fire, it is burning when it should not be. Level: B1
如果你的家着火了，你只能救一样东西，那会是什么？
If your home was ___on ___fire and you could save only one thing, what would it be?
许多建筑物都着火了。
A lot of buildings were ___on ___fire.
因为油洒了，厨房着火了。
The kitchen was ___on ___fire because of the oil spill.
