I find it difficult to learn physics．（变成复合句）
I find to learn physics．
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？
The scientists released the picture of a black hole to the world on April 10．（改为被动语态）
The picture of a black hole to the world by the scientists on April 10．
I have no idea how I can operate the new washing machine．（改为简单句）
I have no idea operate the new washing machine．
The government is taking action to improve air quality．（保持句意不变）
The government is taking action to air quality ．
My sister will take part in the Chinese poem contest in a few days．（对划线部分提问）
will your sister take part in the Chinese poem contest？
Lucy practices the violin in the club on Friday afternoons．（改为否定句）
Lucy the violin in the club on Friday afternoons．
The secretary apologized to the manager for making the same mistake again．（保持句意不变）
The secretary to the manager for making the same mistake again．
Keep working hard， and you will achieve success．（保持句意不变）
keep working hard， you will achieve success．
"How are you getting along with your new roommate？" Franklin asked me．（改为宾语从句）
Franklin asked me was getting along with my new roommate．
Grace does online shopping four times a month．（对划线部分提问）
does Grace do online shopping？
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