Sandy, _______ apple on the table is for you. Have it before you go out.—Thanks, Mum. _____ apple a day keeps the doctor away.
___ _the population of China?–_______over 1,300,000,000.
Attention, please. The flight has to be_______ because of the heavy rain.
Now my father __________ his bike to work every day instead of driving.
He said he took vacation ______ Europe last summer.[ ]