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.
At weekends in Chengdu, you can often see many people ________ outside some restaurants,__________to have dinners
The laboratory was well ______ for atomic research.
A poet and artist ______ coming to speak to us about Chinese literature and painting tomorrow afternoon.
The president spoke at the business meeting for nearly an hour without ______ his notes.
Her work changed the way _______ people think about chimps.