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.
Didn't he see you just now?(根据句意做出肯定或否定回答)
,he . He said hello to me.
China is the greatest country in the world.(改为同义句)
China is greater than country in the world.
People will have robots at home in 20 years.(对划线部分提间)
will people have robots at home?
He has some good ideas.(改为否定句)
He have good ideas.
Jeff asked his students, "Do you know it is important to protect the earth?" (改为间接引语)
Jeff asked his students they it is important to protect the earth.