The invention of smart phones changed the world in many ways.(改为一般疑问句)
the invention of smart phones the world in many ways?
Now,more and more foreigners speak Chinese well.(变为被动语态)
Now,Chinese by more and more foreigners well.
It took him one and a half hours to finish the task.(变成同义句)
He one and a half hours the task.
China has a population of 1.37billion.(对划线部分提问)
the population of China?
She must be a doctor, ?(完成反意疑问句)
"Are you free to come to my place this Saturday?"Aaron asked me.(改为间接引语)
Aaron asked me free to go to his place that Saturday.