What is known to all is that up to now China has made a great___________ to preserving the peace.

The park was full of people_________ themselves in the sunshine.

____________Li Bai, a great Chinese poet, was born is known to the public, but some won’t accept it.

He is so stubborn that once he makes up his mind , nothing can change it;_______, it’s no use arguing with him.

This meeting room is a non-smoking area. I would like to warn you___________ that if you smoked here you would be fined.