There ______a number of books in our school library. The number of books ________getting larger than last year.
Peter is a good doctor.
He said _____ he would come back in a week.
Why not _________ an English club to practise _________ English?
--- Why didn’t you go to Tom’s birthday party? --- Sorry, _________.
We found _________ necessary _________ our pocket money to support Project Hope.