If I buy more than one, will you give me a _________ ?
So absorbed in his work ____________that not a sound ___________.
My English teacher’s humor was ____ make every student burst into laughter.
---Turn off the TV, Jack, ______ your homework now? --- Mum, just ten more minutes, please.
She kept a little notebook, in whichthe telephone numbers and email addresses of her friends.
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.