– Do you know the West Lake in Hangzhou? – Yes, this is the third time that I ____ this beautiful city.
It is uncertain________side effect the medicine will bring about,although about two thousand patients have taken it.
Please remember________wins your respect is not your background but your knowledge and virtues.
________is known to us all is that the 2012 Olympic Games will take place in London.
________he couldn’t understand was________,as a teacher of Chinese,he was asked to teach history.
________parents say and do has a lifelong effect on their children.