I wrote him a letter to show my _____ of his thoughtfulness.
Jack is a student and studies at the NO. 1 Middle School, _____.
Lawrence Craven, a doctor from the USA, is the author of several published reports, one of _____ introduced the idea in 1953 _____ aspirin could reduce the risk of heart attacks.
_____ is known to us all is that the 2010 World Expo will take place in Shanghai.
— Could you put off the meeting ? —__________. This is the only day everyone is available.
If you are unable to attend the interview, for__________reason, you should inform us immediately.