Dr. Peter Spence, ______headmaster of the school, told us , “______fifth of pupils here go on to study at Oxford and Cambridge.”
The reason ___he didn’t come was ____he was injured.
Mother shut the window ______ she might keep the insects out.
Mr. Herpin is one of the foreign experts who ___in China.
Anyone can borrow books from this library _______ he keeps them clean and returns them in time.
So fast _____that it is difficult for us to imagine its speed.