China has made a promise________ she will try her best to keep the world peace.
In the past several weeks, many cities in Northern China from heavy fogs and severe cold.
she was out of the room, he took a quick look at the papers on her desk.
Visitors to the hills are greeted by signs them to look out.
It is already well understood causes the global warming.
— Jim has gone to Britain to see a modern art exhibition. — Oh, really? Do you know when he ?