They came up a good idea to keep their classroom clean and tidy.
Changbai Mountain in Jilin Province is a good place to fun.
If you borrow books from the library,give back on time.
The smart boy can find Beijing easily on the of China.
I want to be a teacher like Zhang Guimei when I grow .
Zhurong,China's Mars explorer, (land) safely on the red planet in May 2021,making China the third nation to do so in human history.
The beans of this kind (sell) in only a few coffee shops in Shanghai at present.
一Didn't you see the red light?
一Sorry,sir.I (check) the map and didn't notice it.
People are advised (keep) a distance of 6 feet or more in public places.
There are many places on the earth that are still (known) to humans.
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