Составьте сложноподчиненное предложение из двух частей, используя подходящий союз.
1. Only the concrete skeleton of the factory remained. There was a fire.
2. The whole house shakes. A train goes past.
3. The bridge was old. It was reinforced with steel girders.
4. You want to speak to me. Learn English.

There was a fire, so only the concrete skeleton of the factory remained.The whole house shakes, when the train goes past.-------------------If you want to speak to me, you should learn English.