作此决定并非偶然，对此我已思虑多时。
The decision and I'd thought about it for long.
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.