Ответ:

If she lived in China, she would speak Chinese.

If there was a late flight, would you take it?

If he found money in the street, he would not keep it.

If I knew how to use this machine, I would not ask you to explain it.

If they were in trouble, would you help them?

If I lived in the country, I would be happier.

If they were rich, they would travel round the world.

If you had a million dollars, what would you do?

Объяснение:

В условной части предложения  используется глагол в прошлом времени ( 2 -я форма), в следствии - would + основная форма глагола