Most of us manage our physical health better than our emotional health, ______ problems to cause real harm.
The main cause of HIV / AIDS infection in China is drug abuse, ______ is very serious in Yunnan.
It is reported that some mainland visitors to Hong Kong Disneyland didn't _______ the park rules and behaved improperly.
Signnatel Inc, ______ world's largest maker of controller chips for MP3 players, is set to establish _______ new R & D centre in Hong Kong and open two sales offices on China's mainland.
__________ some medals came to live in the sea is not known.
--Nancy is not coming tonight. --But she __________!